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85-621: The result was the S-49A, designed by Kosta Sivčev, Svetozar Popović and Slobodan Zrnić, on the basis of the pre-war Rogožarski IK-3 . The S-49A was surpassed by the improved S-49C, featuring an all-metal construction and a more powerful engine. A total of 45 S-49A and 113 S-49C were produced by the Ikarus Aircraft Factory in Zemun . The last aircraft were retired from service in 1960/61, having been replaced by more modern jet-powered aircraft. After

170-472: A radio station which would otherwise require a full-scale assault ." Railroads, where strategically important to the regime the coup is against, are prime targets for sabotage—if a section of the track is damaged entire portions of the transportation network can be stopped until it is fixed. A sabotage radio was a small two-way radio designed for use by resistance movements in World War II, and after

255-537: A Swiss-made Oerlikon FF 20 mm cannon . The replacement engine was less powerful, generating 860 hp (640 kW) at 4,000 m (13,000 ft). German-made Telefunken radios were to be installed but delays meant that only the first aircraft was delivered with a radio. The production aircraft were numbered 2–13; the prototype was number 1. The aircraft were built at the Rogožarski factory in Belgrade and assembled at

340-600: A foreign agent or an indigenous supporter, in particular when actions result in the destruction or damaging of a productive or vital facility, such as equipment, factories, dams, public services, storage plants or logistic routes. Prime examples of such sabotage are the events of Black Tom and the Kingsland Explosion . Like spies, saboteurs who conduct a military operation in civilian clothes or enemy uniforms behind enemy lines are subject to prosecution and criminal penalties instead of detention as prisoners of war . It

425-451: A four-hour fire that destroyed half a million 3-inch explosive shells and destroyed the plant for an estimated at $ 17 million in damages. Wozniak's involvement was not discovered until 1927. On 12 February 1917, Bedouins allied with the British destroyed a Turkish railroad near the port of Wajh , derailing a Turkish locomotive. The Bedouins traveled by camel and used explosives to demolish

510-665: A game of soccer while part of their team entered the plant and destroyed machinery. In December 1944, the Germans ran a false flag sabotage infiltration, Operation Greif , which was commanded by Waffen-SS commando Otto Skorzeny during the Battle of the Bulge . German commandos , wearing US Army uniforms , carrying US Army weapons, and using US Army vehicles, penetrated US lines to spread panic and confusion among US troops and to blow up bridges, ammunition dumps , and fuel stores and to disrupt

595-505: A general reluctance to adopt new concepts delayed the IK-3, and a contract for the production of the prototype was not signed until March 1937. The company selected for construction was Rogožarski A.D. in Belgrade. The first flight of the prototype was carried out by the VVKJ Test Group towards the end of May 1938 and the aircraft was then flown by a group of VVKJ officers who were to determine

680-612: A good idea. On 1 January 1984, the Cuscatlan bridge over the Lempa river in El Salvador , critical to the flow of commercial and military traffic, was destroyed by guerrilla forces using explosives after using mortar fire to "scatter" the bridge's guards, causing an estimated $ 3.7 million in required repairs, and considerably impacting on El Salvadoran business and security. In 1982 in Honduras ,

765-459: A group of nine Salvadorans and Nicaraguans destroyed a main electrical power station, leaving the capital city Tegucigalpa without power for three days. Some criminals have engaged in acts of sabotage for reasons of extortion . For example, Klaus-Peter Sabotta sabotaged German railway lines in the late 1990s in an attempt to extort DM 10 million from the German railway operator Deutsche Bahn . He

850-556: A low-wing monoplane with retractable landing gear . Contemporary thinking within the VVKJ led them to evolve their initial ideas into a strut-braced gull-wing monoplane armed with a hub -firing autocannon and fuselage -mounted synchronised machine guns . The design concept for what became the Ikarus IK-2 was submitted to the VVKJ on 22 September 1933. With this work completed, Ilić and Sivčev had time to start preliminary development of

935-537: A new fighter aircraft, the Ikarus S-49. The first prototype of the S-49A flew in June 1949. The first operational aircraft were delivered to combat units at the beginning of 1950. The S-49A was of mixed construction, with Soviet built VK-105 engines which were no longer available after 1948. Therefore, it was decided to produce a new version of the aircraft powered by the similar French Hispano-Suiza 12Z -17 engine. Because of

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1020-569: A new low-wing monoplane that could better meet and defeat the high-performance bomber prototypes then in development by potential adversaries. Ilić and Sivčev's new streamlined low-wing monoplane design had a retractable undercarriage. Like the IK-2 it was initially developed privately by the two men. A scale model was tested in the Eiffel-built wind tunnel in Paris, but the pair soon realised that they needed

1105-416: A non-cooperative attitude, and to induce others to follow suit. There are many examples of physical sabotage in wartime. However, one of the most effective uses of sabotage is against organizations. The OSS manual provides numerous techniques under the title "General Interference with Organizations and Production": From the section entitled, "General Devices for Lowering Morale and Creating Confusion" comes

1190-500: A one-seater prototype in early July 1939, with its first flight scheduled for late 1941. At the time of the invasion, the production of the IK-5 prototype was well advanced, but it was not pursued either during or after the war. The advanced Yugoslav Ikarus S-49 fighter, produced after World War II, was based on the IK-3. When they entered service, the IK-3 suffered from minor equipment and instrument faults, largely caused by deficiencies in

1275-691: A portion of track. In Ireland, the Irish Republican Army (IRA) used sabotage against the British following the Easter 1916 uprising. The IRA compromised communication lines and lines of transportation and fuel supplies. The IRA also employed passive sabotage, with dock and railroad workers refusing to work on ships and rail cars used by the government. In 1920, agents of the IRA committed arson against at least fifteen British warehouses in Liverpool. The following year,

1360-460: A ski resort in Vail, Colorado . ELF used sabotage tactics often in loose coordination with other environmental activist movements to physically delay or destroy threats to wildlands as the political will developed to protect the targeted wild areas that ELF engaged. In war, the word is used to describe the activity of an individual or group not associated with the military of the parties at war, such as

1445-668: A smaller wing area than the Hawker Hurricane and the Supermarine Spitfire , to achieve a higher speed for the engine power. In comparison to the Messerschmitt Bf 109 , the Yugoslav design had a shorter fuselage and smaller turning radius. It differed from British and German design concepts in that its proposed armament was concentrated in the fuselage. The designs were delivered to the VVKJ in time for approval by mid-1936, but

1530-592: A third engineer to help evaluate the design and determine the structural details. Slobodan Zrnić, the head of construction at the Yugoslav State Aircraft Factory in Kraljevo , was recruited, as he had worked as a specialist aircraft engineer in France. The project name for the IK-2 was changed from IK, standing for (Ljubomir) Ilić and Kosta (Sivčev), to IKZ, to include Zrnić. This name was changed, possibly due to

1615-536: A tight formation of three bombers; his aircraft received 56 hits from return fire, 20 of which were in the engine and propeller, but he managed to land the aircraft. The return of another IK-3 from the workshops meant that the number of serviceable IK-3s remained at three. It became difficult to continue activity from the 51st Fighter Group airfield at Zemun due to air attacks, so on 8 April the remaining IK-3s and Bf 109Es flew to an auxiliary airfield at Veliki Radinci , 50 km (31 mi) north-west of Belgrade, where

1700-718: A work') in Le Père Peinard and in 1911 he also wrote a book entitled Le Sabotage . At the inception of the Industrial Revolution , skilled workers such as the Luddites (1811–1812) used sabotage as a means of negotiation in labor disputes. Labor unions such as the Industrial Workers of the World (IWW) have advocated sabotage as a means of self-defense and direct action against unfair working conditions. The IWW

1785-502: Is "counterintelligence designed to detect and counteract sabotage". The United States Department of Defense definition, found in the Dictionary of Military and Associated Terms , is "action designed to detect and counteract sabotage. See also counterintelligence ". During World War II, British subject Eddie Chapman , trained by the Germans in sabotage, became a double agent for the British. The German Abwehr entrusted Chapman to destroy

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1870-470: Is a deliberate action aimed at weakening a polity , government , effort, or organization through subversion , obstruction, demoralization , destabilization , division , disruption , or destruction. One who engages in sabotage is a saboteur . Saboteurs typically try to conceal their identities because of the consequences of their actions and to avoid invoking legal and organizational requirements for addressing sabotage. The English word derives from

1955-620: Is alleged to have sabotaged a Siberian pipeline during the Cold War , using information from the Farewell Dossier . A more recent case may be the Stuxnet computer worm , which was designed to subtly infect and damage specific types of industrial equipment. Based on the equipment targeted and the location of infected machines, security experts believe it was an attack on the Iranian nuclear program by

2040-454: Is carried out in such a way as to involve a minimum danger of injury, detection, and reprisal . There are two main methods of sabotage: physical destruction and the "human element". While physical destruction as a method is self-explanatory, its targets are nuanced, reflecting objects to which the saboteur has normal and inconspicuous access in everyday life. The "human element" is based on universal opportunities to make faulty decisions, to adopt

2125-404: Is common for a government in power during war or supporters of the war policy to use the term loosely against opponents of the war. Similarly, German nationalists spoke of a stab in the back having cost them the loss of World War I. A modern form of sabotage is the distribution of software intended to damage specific industrial systems. For example, the U.S. Central Intelligence Agency (CIA)

2210-502: Is found in 1873–1874 in the Dictionnaire de la langue française of Émile Littré . Here it is defined mainly as 'making sabots, sabot maker'. It is at the end of the 19th century that it really began to be used with the meaning of 'deliberately and maliciously destroying property' or 'working slower'. In 1897, Émile Pouget , a famous syndicalist and anarchist wrote " action de saboter un travail " ('action of sabotaging or bungling

2295-503: Is now serving a sentence of life imprisonment . In 1989, ex- Scotland Yard detective Rodney Whitchelo was sentenced to 17 years in prison for spiking Heinz baby food products in supermarkets, in an extortion attempt on the food manufacturer. On October 8, 2022, the GSM-R radio communication system of the Deutsche Bahn was sabotaged by the cutting of two cables of crucial importance. In

2380-511: The Axis invasion of Yugoslavia began on 6 April 1941. All six were in service with the 51st Independent Fighter Group at Zemun near Belgrade . Pilots flying the IK-3 claimed 11 Axis aircraft had been shot down during the 11-day war. According to one account, to prevent them from falling into German hands, the surviving aircraft and incomplete airframes were destroyed by their crews and factory staff. Another account suggests that one aircraft survived

2465-599: The Black Tom explosion occurred when German agents set fire to a complex of warehouses and ships in Jersey City, New Jersey that held munitions, fuel, and explosives bound to aid the Allies in their fight. On 11 January 1917, Fiodore Wozniak, using a rag saturated with phosphorus or an incendiary pencil supplied by German sabotage agents, set fire to his workbench at an ammunition assembly plant near Lyndhurst, New Jersey , causing

2550-691: The Jewish Military Union as well as more reluctantly helping the Jewish Combat Organization , was responsible for the greatest number of acts of sabotage in German-occupied Europe. The Home Army's sabotage operations Operation Garland and Operation Ribbon are just two examples. In all, the Home Army damaged 6,930 locomotives, set 443 rail transports on fire, damaged over 19,000 rail cars, and blew up 38 rail bridges, not to mention

2635-680: The United States or Israel . Sabotage, done well, is inherently difficult to detect and difficult to trace to its origin. During World War II , the U.S. Federal Bureau of Investigation (FBI) investigated 19,649 cases of sabotage and concluded the enemy had not caused any of them. Sabotage in warfare, according to the Office of Strategic Services (OSS) manual, varies from highly technical coup de main acts that require detailed planning and specially trained operatives, to innumerable simple acts that ordinary citizen-saboteurs can perform. Simple sabotage

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2720-474: The Vietnam War . Between 1969 and 1970, swimmer saboteurs sunk, destroyed, or damaged 77 assets of the U.S. and its allies. Viet Cong swimmers were poorly equipped but well-trained and resourceful. The swimmers provided a low-cost/low-risk option with high payoff; possible loss to the country for failure compared to the possible gains from a successful mission led to the obvious conclusion the swimmer saboteurs were

2805-609: The air force of the Axis puppet state, the Independent State of Croatia . The Germans had used a fence to separate the serviceable aircraft from other aircraft that had been earmarked for scrapping. In late June, while the German guards were distracted listening to news of the invasion of the Soviet Union , local communists, including former VVKJ mechanics, moved the fence. As a result, all the serviceable aircraft were scrapped, including

2890-465: The 162nd Fighter Squadron ( Kapetan Todor Gogić). The IK-3 was then tested against Yugoslav Messerschmitt Bf 109Es in mock dogfights. The evaluation concluded that the IK-3 had several advantages over the Bf 109E; in particular, the Yugoslav aircraft was more manoeuvrable in level flight, enabling it to quickly get behind a pursuing Bf 109E by making tight horizontal turns. In its first year of service, an IK-3

2975-490: The 51st Fighter Group was placed under the 6th Fighter Regiment , which was responsible for the defence of Belgrade. The 51st Fighter Group was further reinforced the day before the invasion began, with the 102nd Fighter Squadron equipped with Bf 109Es. When the invasion began on 6 April, the two IK-3 squadrons had only three serviceable aircraft each. The invasion commenced with a wave of 234 German dive bombers and medium bombers attacking Belgrade. Escorted by 120 fighters,

3060-527: The British de Havilland Company's main plant which manufactured the outstanding Mosquito light bomber but required photographic proof from their agent to verify the mission's completion. A special unit of the Royal Engineers known as the Magic Gang covered the de Havilland plant with canvas panels and scattered papier-mâché furniture and chunks of masonry around three broken and burnt giant generators. Photos of

3145-527: The British to hold refugees, and radar installations that could be used to detect illegal immigrant ships. The Stern Gang and the Irgun used terrorism and sabotage against the British government and against lines of communications. In November 1946, the Irgun and Stern Gang attacked a railroad twenty-one times in a three-week period, eventually causing shell-shocked Arab railway workers to strike. The 6th Airborne Division

3230-511: The French word saboter , meaning to "bungle, botch, wreck or sabotage"; it was originally used to refer to labour disputes, in which workers wearing wooden shoes called sabots interrupted production through different means. A popular but incorrect account of the origin of the term's present meaning is the story that poor workers in the Belgian city of Liège would throw a wooden sabot into

3315-481: The German rail, wheeled, and horse transports. As for Stalin's proxies, their actions led to a great number of the Polish and Jewish hostages, mostly civilians, being murdered in reprisal by the Germans. The Gwardia Ludowa destroyed around 200 German trains during the war, and indiscriminately threw hand grenades into places frequented by Germans. The French Resistance ran an extremely effective sabotage campaign against

3400-602: The Germans during World War II. Receiving their sabotage orders through messages over the BBC radio or by aircraft, the French used both passive and active forms of sabotage. Passive forms included losing German shipments and allowing poor quality material to pass factory inspections. Many active sabotage attempts were against critical rail lines of transportation. German records count 1,429 instances of sabotage from French Resistance forces between January 1942 and February 1943. From January through March 1944, sabotage accounted for three times

3485-424: The IK-3 encouraged the three designers to pursue the idea of a twin-engined fighter, capable of long-range reconnaissance, photographic reconnaissance and operation as a "destroyer" or heavy fighter similar to the Messerschmitt Bf 110 . The concept included both one-seater and two-seater versions. Development of this new aircraft, designated IK-5, was commenced on the back of the success of the IK-3. The VVKJ ordered

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3570-565: The IRA set fire to numerous British targets again, including the Dublin Customs House, this time sabotaging most of Liverpool's firetrucks in the firehouses before lighting the matches. Lieutenant Colonel George T. Rheam was a British soldier, who ran Brickendonbury Manor from October 1941 to June 1945 during World War II , which was Station XVII of the Special Operations Executive (SOE), which trained specialists for

3655-635: The IWW, sabotage's meaning expanded to include the original use of the term: any withdrawal of efficiency , including the slowdown , the strike , working to rule , or creative bungling of job assignments. One of the most severe examples was at the construction site of the Robert-Bourassa Generating Station in 1974, in Québec, Canada, when workers used bulldozers to topple electric generators, damaged fuel tanks, and set buildings on fire. The project

3740-590: The Malaysian population, who gradually withdrew support for the Communist movement as their livelihoods became threatened. In Mandatory Palestine from 1945 to 1948, Jewish groups opposed British control. Though that control was to end according to the United Nations Partition Plan for Palestine in 1948, the groups used sabotage as an opposition tactic. The Haganah focused their efforts on camps used by

3825-582: The Resolution of Informbiro in 1948 and the resulting breakup with the Soviet Union , Yugoslavia was forced to rely on its domestic military industry. The same constructors that built the Rogozarski IK-3 (designers Ljubomir Ilic , Kosta Sivcev , Slobodan Zrnic ) before the war, engineers Kosta Sivcev , Slobodan Zrnic and Svetozar K. Popovic, used existing technical documentation of the IK-3 to construct

3910-457: The SOE. Rheam innovated many sabotage techniques and is considered by M. R. D. Foot the "founder of modern industrial sabotage." Sabotage training for the Allies consisted of teaching would-be saboteurs' key components of working machinery to destroy. "Saboteurs learned hundreds of small tricks to cause the Germans big trouble. The cables in a telephone junction box ... could be jumbled to make

3995-654: The VVKJ or in the aeronautical industry. Ljubomir Ilić and Kosta Sivčev went through this program but, when they returned to Yugoslavia, both were employed in administrative work. Frustrated by this, they decided in 1931 to design a replacement for the Czechoslovakian -built Avia BH-33 E biplane fighter in service with the VVKJ. Working in a basement in Belgrade, and later in Ilić's apartment in Novi Sad , they secretly devoted their spare time to work on their design. They originally planned

4080-403: The Yugoslav aeronautical industry which had resulted in a mixture of foreign and Yugoslav-made instruments being fitted to the aircraft. The Yugoslav Minister of War approved the acquisition of a further 48 IK-3s to be delivered in 1941–1942. The operational aircraft were allocated to the 51st Independent Fighter Group at Zemun, six each to the 161st Fighter Squadron ( Kapetan Savo Poljanec) and

4165-563: The actions and expenditures of private entities, corporations, and organizations against democratically approved or enacted laws, policies and programs. After the Cold War ended, the Mitrokhin Archives were declassified, which included detailed KGB plans of active measures to subvert politics in opposing nations. Sabotage is a crucial tool of the successful coup d'etat , which requires control of communications before, during, and after

4250-511: The aftermath, the railway traffic in Northern Germany was completely shut down for several hours. German criminal police took over the investigation. The term political sabotage is sometimes used to define the acts of one political camp to disrupt, harass or damage the reputation of a political opponent, usually during an electoral campaign, such as during Watergate . Smear campaigns are a commonly used tactic. The term could also describe

4335-552: The attacks against the railroads. The Home Army was also responsible for 4,710 built-in flaws in parts for aircraft engines and 92,000 built-in flaws in artillery projectiles, among other examples of significant sabotage. In addition, over 25,000 acts of more minor sabotage were committed. It continued to fight against both the Germans and the Soviets; however, it did aid the Western Allies by collecting constant and detailed information on

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4420-603: The beginning of 1952, the Ikarus S-49C was introduced into the units of the Yugoslav Air Force . About 130 S-49C were produced during the 1950s and they remained in service until 1961. Both variants of S-49A and C are on display. Data from The Complete Book of Fighters General characteristics Performance Armament Related development Aircraft of comparable role, configuration, and era Rogo%C5%BEarski IK-3 The Rogožarski IK-3

4505-413: The best employment for it within the VVKJ, along with tactics to be used in Yugoslav conditions. These pilots observed that the controls were highly sensitive; the only real criticisms related to the visual distortion caused by the curved panels of the canopy . Some pilots believed that the fuselage-mounted armament should be supplemented by two wing-mounted machine guns. The test pilots also had to compare

4590-695: The bigger and heavier engine, the new aircraft had to be of all-metal construction with a much longer nose. While the aircraft was mainly built by Ikarus, the wings and tail were built by the SOKO factory in Mostar . The armament remained the same as with the Ikarus S-49A and it consisted of one 20 mm Mauser MG-151/20 autocannon produced by Germany during World War II and two 12.7 mm Colt Browning machine guns. In addition, under wing racks for two 50 kg bombs or four 127 mm HVAR missiles were provided. At

4675-495: The bombers reached Belgrade at 07:00; they were met by the 51st Fighter Group, minus an IK-3 from the 161st Fighter Squadron that had developed engine trouble after takeoff and was unable to engage. The other five IK-3s were the first to meet the initial bomber wave but they were almost immediately attacked by Bf 109Es of Jagdgeschwader 77 . The pilots of the IK-3s claimed five German aircraft, and one aircraft from each Yugoslav squadron

4760-433: The canopy to provide better visibility. The instrument layout was improved and the upper rear fuselage behind the pilot's seat was re-shaped. The folding undercarriage leg covers were replaced by single plates. The main changes were the replacement of the engine with a modified version of the Hispano-Suiza 12Y engine made under licence by the Czechoslovak company Avia and the replacement of the Hispano-Suiza HS.404 cannon by

4845-447: The company hangar at Zemun. The first six aircraft were delivered by late March 1940; delivery of the rest of the order was delayed until July due to delays by foreign suppliers. The first production aircraft was delivered to the VVKJ Test Group, where it was confirmed that the production aircraft were free of the faults in the prototype. The Test Group determined that the maximum speed, previously estimated at 540 km/h (340 mph),

4930-422: The coup is staged. Simple sabotage against physical communications platforms using semi-skilled technicians, or even those trained only for this task, could effectively silence the target government of the coup, leaving the information battle space open to the dominance of the coup's leaders. To underscore the effectiveness of sabotage, "A single cooperative technician will be able temporarily to put out of action

5015-421: The environment. The U.S. Federal Bureau of Investigation (FBI) and other law enforcement agencies use the term eco-terrorist when applied to damage of property. Proponents argue that since property cannot feel terror, damage to property is more accurately described as sabotage. Opponents, by contrast, point out that property owners and operators can indeed feel terror. The image of the monkey wrench thrown into

5100-437: The following day all remaining aircraft of the 6th Fighter Regiment, including the remaining IK-3s, were burned by their crews. According to aviation writers Dragan Savić and Boris Ciglić, one serviceable IK-3 was captured by the Germans in April 1941 and it was joined by another by the end of June. Both aircraft were located at Zemun, along with 23 other former VVKJ aircraft in working condition that were destined for service with

5185-445: The following quintessential simple sabotage advice: "Act stupid." The United States Office of Strategic Services , later renamed the CIA, noted the specific value in committing simple sabotage against the enemy during wartime: "... slashing tires, draining fuel tanks, starting fires, starting arguments, acting stupidly, short-circuiting electric systems, abrading machine parts will waste materials, manpower, and time." To underline

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5270-522: The importance of simple sabotage on a widespread scale, they wrote, "Widespread practice of simple sabotage will harass and demoralize enemy administrators and police." The OSS was also focused on the battle for hearts and minds during wartime; "the very practice of simple sabotage by natives in enemy or occupied territory may make these individuals identify themselves actively with the United Nations War effort, and encourage them to assist openly in periods of Allied invasion and occupation." On 30 July 1916,

5355-486: The invasion and was later destroyed by sabotage . The IK-3 design was the basis for the post-war Yugoslav-built Ikarus S-49 fighter. In the late 1920s, the Royal Yugoslav Air Force ( Serbian : Vazduhoplovstvo vojske Kraljevine Jugoslavije , VVKJ) and the Royal Aero Club of Yugoslavia helped send aspiring aeronautical engineers to France to gain knowledge. It was intended that after this advanced training, they would return to Yugoslavia and be offered specialist roles in

5440-683: The lines of communication. Many of the commandos were captured by the Americans. Because they were wearing US uniforms, a number of the Germans were executed as spies, either summarily or after military commissions . From 1948 to 1960, the Malayan Communists committed numerous effective acts of sabotage against the British Colonial authorities, first targeting railway bridges, then hitting larger targets such as military camps. Most of their efforts were intended to weaken Malaysia 's colonial economy and involved sabotage against trains, rubber trees, water pipes, and electric lines. The Communists' sabotage efforts were so successful that they caused backlash among

5525-411: The machines to disrupt production. One of the first appearances of saboter and saboteur in French literature is in the Dictionnaire du Bas-Langage ou manières de parler usitées parmi le peuple of d'Hautel, edited in 1808. In it the literal definition is to 'make noise with sabots' as well as 'bungle, jostle, hustle, haste'. The word sabotage appears only later. The word sabotage

5610-417: The main factor had been the pilot's handling of the highly sensitive controls. The loss of the prototype and some changes in the construction of the production model delayed the fulfilment of the contract. Further tests were conducted on the wing and it was found to withstand a g-force of 14. Modifications were made for the production model, including the use of flat plexiglass panels in the windscreen and

5695-513: The moving parts of a machine to stop it from working was popularized by Edward Abbey in the novel The Monkey Wrench Gang and has been adopted by eco-activists to describe the destruction of earth damaging machinery. From 1992 to late 2007 a radical environmental activist movement known as Earth Liberation Front (ELF) engaged in a near-constant campaign of decentralized sabotage of any construction projects near wildlands and extractive industries such as logging and even an arson attack against

5780-410: The number of locomotives damaged by Allied air power. See also Normandy landings for more information about sabotage on D-Day . During World War II, the Allies committed sabotage against the Peugeot truck factory. After repeated failures in Allied bombing attempts to hit the factory, a team of French Resistance fighters and Special Operations Executive (SOE) agents distracted the German guards with

5865-402: The performance of the IK-3 with the Hawker Fury (a biplane), Heinkel He 112 , Morane-Saulnier M.S. 405 and Hawker Hurricane. They concluded that the IK-3 most closely matched the Morane-Saulnier; the Yugoslav aircraft was 40 km/h (25 mph) faster. In November 1938, the VVKJ placed an order with Rogožarski for 12 aircraft. On 19 January 1939, test pilot Kapetan Milan Pokorni put

5950-432: The prototype into a steep dive. When he reached 400 m (1,300 ft), the windscreen detached from the aircraft; Pokorni pulled up hard and the strain broke off half of the starboard wing. The aircraft crashed, and Pokorni was killed. An inquiry determined that modifications to the windscreen had contributed to the accident. Engineers recalculated the stress factors on the airframe and they were found to be safe, and

6035-459: The remaining IK-3s were scrambled with the rest of the 51st Fighter Group but the IK-3 pilots claimed no victories. A joint claim was made during the third German attack at 14:00, a twin-engined bomber by Gogić and another pilot from the 162nd Fighter Squadron. The following day, the IK-3 pilots made five or six sorties against German bomber formations and their fighter escorts, and claimed three bombers between them. At 17:00, Milislav Semiz attacked

6120-535: The similarities between the Cyrillic " З " (Z) and the Arabic numeral "3", and the aircraft became known as the IK-3. The aircraft was to be powered by a Hispano-Suiza 12Y 29 engine, generating 980 hp (730 kW) at an altitude of 5,000 m (16,000 ft). The designers favoured manoeuvrability over speed, trying to find a compromise between the German and British concepts of a modern monoplane fighter. The design had

6205-411: The strikers into the army and then ordering them back to work. Undaunted, the workers carried their strike to the job. Suddenly, they could not seem to do anything right. Perishables sat for weeks, sidetracked and forgotten. Freight bound for Paris was misdirected to Lyon or Marseille instead. This tactic – the French called it "sabotage" – won the strikers their demands and impressed Bill Haywood. For

6290-408: The surviving aircraft of the 6th Fighter Regiment were concentrated. Poor weather made operations impossible until 11 April, when Semiz shot down a Bf 110 that had strafed the airfield. Later that day, Gogić and another IK-3 pilot claimed one Junkers Ju 87 'Stuka' dive bomber each during a patrol. That night, German troops approached within 15 km (9.3 mi) of the airfield at Veliki Radinci and

6375-421: The time of the Axis invasion, and the only prototype to be fitted with a non-production engine was deliberately destroyed by factory personnel during the invasion, along with the incomplete production aircraft. Development of a dual-control two-seat trainer variant of the IK-3 had commenced but pressure on the design team had delayed the completion of the project when the invasion intervened. The development of

6460-609: The two IK-3s. "The IK-3s put up a valiant resistance against the Luftwaffe," wrote William Green , "scoring a number of 'kills' before they were finally destroyed in combat." Aviation writers Šime Oštrić and Čedomir Janić credit the IK-3 pilots with 11 victories, Semiz being the most successful, with four victories. Data from Oštrić & Janić General characteristics Performance Armament Related development Aircraft of comparable role, configuration, and era Related lists Sabotage Sabotage

6545-463: The war often used by expeditions and similar parties. Arquilla and Rondfeldt, in their work entitled Networks and Netwars , differentiate their definition of " netwar " from a list of "trendy synonyms", including "cybotage", a portmanteau from the words "sabotage" and " cyber ". They dub the practitioners of cybotage "cyboteurs" and note while all cybotage is not netwar, some netwar is cybotage. Counter-sabotage, defined by Webster's Dictionary ,

6630-735: The wrong connections when numbers were dialed. A few ounces of plastique , properly placed, could bring down a bridge, cave in a mine shaft, or collapse the roof of a railroad tunnel." The Polish Home Army Armia Krajowa , which commanded the majority of resistance organizations in Poland (even the National Forces, except the Military Organization Lizard Union ; the Home Army also included the Polish Socialist Party – Freedom, Equality, Independence ) and coordinated and aided

6715-542: Was 527 km/h (327 mph), at an altitude of 5,400 m (17,700 ft). By July 1940, a further series of 25 IK-3s had commenced construction at the Rogožarski factory. A shortage of engines was a major obstacle to mass production and development of the IK-3, so tests were conducted with more powerful engines, including the Daimler-Benz DB 601 , Rolls-Royce Merlin II and Hispano-Suiza 12Y51. The tests were incomplete at

6800-549: Was a 1930s Yugoslav monoplane single-seat fighter , designed by Ljubomir Ilić, Kosta Sivčev and Slobodan Zrnić as a successor to the Ikarus IK-2 fighter. Its armament consisted of a hub -firing 20 mm (0.79 in) autocannon and two fuselage -mounted synchronised machine guns . It was considered comparable to foreign aircraft such as the Messerschmitt Bf 109 E and came into service in 1940. The prototype crashed during testing; twelve production aircraft had been delivered by July 1940. Six IK-3s were serviceable when

6885-689: Was called in to provide security as a means of ending the strike. Sabotage against British Forces was one of the primary methods used by EOKA during the Cyprus liberation campaign in order to weaken the British posture on Cyprus. One of the more famous sabotage operations undertaken by EOKA was the Sabotage at RAF Akrotiri where 3 members of the organisation entered the base and placed multiple bombs undetected and destroying 4 English Electric Canberra aircraft and one de Havilland Venom aircraft. The Viet Cong used swimmer saboteurs often and effectively during

6970-473: Was delayed a year, and the direct cost of the damage estimated at $ 2 million CAD. The causes were not clear, but three possible factors have been cited: inter-union rivalry, poor working conditions, and the perceived arrogance of American executives of the contractor, Bechtel Corporation. Certain groups turn to the destruction of property to stop environmental destruction or to make visible arguments against forms of modern technology they consider detrimental to

7055-517: Was lost when one of the squadron commanders, Kapetan Anton Ercigoj, was making a mock attack on a Potez 25 over the confluence of the Sava and Danube rivers. After passing below the Potez, he went into a climb with the intention of performing a loop. His rate of climb was too steep and the aircraft fell into a spin at low altitude and hit the water. Before the Axis invasion of Yugoslavia in early April 1941,

7140-436: Was lost. Poljanec had claimed a twin-engined bomber and a Bf 109E; when he returned to Zemun in his badly damaged aircraft, he was strafed by a Messerschmitt Bf 110, which further damaged his aircraft and wounded him. After this encounter, only three IK-3s were serviceable, including the one that had developed engine difficulties prior to the first German wave. A second wave of German aircraft arrived over Belgrade at 10:00 and

7225-429: Was shaped in part by the industrial unionism philosophy of Big Bill Haywood , and in 1910 Haywood was exposed to sabotage while touring Europe: The experience that had the most lasting impact on Haywood was witnessing a general strike on the French railroads. Tired of waiting for parliament to act on their demands, railroad workers walked off their jobs all across the country. The French government responded by drafting

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