82-795: The Otranto Barrage was an Allied naval blockade of the Strait of Otranto between Brindisi in Italy and Corfu on the Greek side of the Adriatic Sea in the First World War . The operation consisted of over 200 vessels at the height of the blockade. The blockade was intended to prevent the Austro-Hungarian Navy from escaping into the Mediterranean and threatening Allied operations there. The blockade
164-678: A British Expeditionary Force of 100,000 men would be landed in France; in addition, the Royal Navy would be responsible for the North Sea , the Channel and protecting Northern France, with the French navy concentrated in the Mediterranean . Britain was committed to support France in a war against Germany but this was not widely understood outside government or the upper ranks of the military. As late as 1 August,
246-481: A 6-pounder gun and depth charges . In 1915 when the blockade was begun, two divisions of 20 would be on patrol at a time, equipped with steel indicator nets intended to trap submarines or at least alert the surface vessels to their presence. A third division would be at Brindisi. The drifters were supported by destroyers and aircraft. However, the demands of the Gallipoli Campaign and other naval operations left
328-618: A German ultimatum demanded unimpeded progress through any part of Belgium, which was refused. Early on the morning of 4 August, the Germans invaded and the Belgian government called for British assistance under the 1839 Treaty; by the end of 1914, over 95% of the country was occupied but the Belgian Army held their lines on the Yser Front throughout the war. HMS Dartmouth (1911) HMS Dartmouth
410-487: A clear majority of the Liberal government and its supporters wanted to stay out of the war. While Liberal leaders H. H. Asquith and Edward Grey considered Britain legally and morally committed to support France regardless, waiting until Germany triggered the 1839 Treaty provided the best chance of preserving Liberal party unity. The German high command was aware entering Belgium would lead to British intervention but decided
492-782: A cost of £320,406. On commissioning , Dartmouth joined the Atlantic Fleet , being attached to the Third Battle Squadron from 1912 to 1913. After a 1913 cruise to the Mediterranean Sea , she was briefly attached to the Second Light Cruiser Squadron at Devonport to participate in the 1913 Naval Manoeuvres before leaving to join the East Indies Squadron of the Eastern Fleet. On the outbreak of
574-558: A further three seriously. Skipper Joseph Watt was later awarded the Victoria Cross for defending his drifter Gowanlea under heavy attack from Novara . The British light cruisers HMS Dartmouth and Bristol —together with Italian and French destroyers, under command of Italian Rear Admiral Alfredo Acton —steamed from Brindisi to engage the Austrians, resulting in the Battle of
656-538: A route into the crumbling Ottoman Empire, where Germany also had significant interests. Combined with the increase in Russian military strength, both Austria and Germany felt threatened by Serbian expansion; when Austria invaded Serbia on 28 July 1914, Russian Foreign Minister Sergey Sazonov viewed it as an Austro-German conspiracy to end Russian influence in the Balkans. In addition to its own territory, Russia viewed itself as
738-832: The Admiralty that did the same for the Royal Navy . Theatre commanders like Douglas Haig on the Western Front or Edmund Allenby in Palestine then reported to the CIGS. After the Indian Army, the largest individual units were the Australian Corps and Canadian Corps in France, which by 1918 were commanded by their own generals, John Monash and Arthur Currie . Contingents from South Africa, New Zealand and Newfoundland served in theatres including France, Gallipoli , German East Africa and
820-659: The Balkan League to prevent further Austrian expansion. Austria viewed Serbia with hostility partly due to its links with Russia, whose claim to be the protector of South Slavs extended to those within the Austro-Hungarian Empire, such as the Czechs and Slovaks . Serbia also potentially gave Russia the ability to achieve their long-held objective of capturing Constantinople and the Dardanelles . Austria-Hungary supported
902-524: The Battle of the Otranto Straits . A force of three Austro-Hungarian cruisers ( Helgoland , Novara and Saida carried out an attack on the drifters of the Otranto Barrage , while two destroyers Csepel and Warasdiner carried out a diversionary attack against merchant shipping off Albania. The two destroyers attacked an Italian convoy at about 03:30 Central European Time (CET), sinking
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#1732848303355984-694: The British Empire , many of whom made significant contributions to the Allied war effort, both in the provision of troops and civilian labourers. It was split into Crown Colonies administered by the Colonial Office in London, such as Nigeria , and the self-governing Dominions of Canada , Newfoundland , New Zealand , Australia and South Africa . These controlled their own domestic policies and military expenditure but not foreign policy. In terms of population,
1066-933: The British Indian Army served in different theatres of the war, primarily France and the Middle East . From 1914 to 1916, overall Imperial diplomatic, political and military strategy was controlled by the British War Cabinet in London; in 1917 it was superseded by the Imperial War Cabinet , which included representatives from the Dominions. Under the War Cabinet were the Chief of the Imperial General Staff or CIGS , responsible for all Imperial ground forces, and
1148-555: The First World War , Dartmouth was docked at Bombay , but was soon returned to sea, escorting a troop convoy from Karachi to Mombasa in Kenya and then taking part in the search for the German cruiser Königsberg . On 9 October that year she captured the German tug Adjutant in the Mozambique Channel . On 30 October, the cruiser HMS Chatham spotted Königsberg moored up
1230-660: The League of the Three Emperors , then with Germany in the 1887–1890 Reinsurance Treaty ; both collapsed due to the competing interests of Austria and Russia in the Balkans . While France took advantage of this to agree the 1894 Franco-Russian Alliance , Britain viewed Russia with deep suspicion; in 1800, over 3,000 kilometres separated the Russian Empire and British India, by 1902, it was 30 km in some areas. This threatened to bring
1312-649: The Mariana , Caroline , and Marshall Islands , while in 1917, a Japanese naval squadron was sent to support the Allies in the Mediterranean Sea . Japan's primary interest was in China and in January 1915, the Chinese government was presented with a secret ultimatum of Twenty-One Demands , demanding extensive economic and political concessions. While these were eventually modified, the result
1394-818: The Paris Peace Conference recognized the United Kingdom, France, Italy, Japan, and the United States as "the Principal Allied and Associated Powers". When the war began in 1914, the Central Powers were opposed by the Triple Entente , formed in 1907 when the agreement between the United Kingdom and Russia complemented existing agreements between the three powers. Fighting commenced when Austria invaded Serbia on 28 July 1914, purportedly in response to
1476-941: The Quadruple Entente and, together with Japan, as the Quintuple Entente . The colonies administered by the countries that fought for the Allies were also part of the Entente powers such as American Philippines , Belgian Congo , British India , French Algeria , and Japanese Korea . The United States joined near the end of the war in 1917 (the same year in which Russia withdrew from the conflict) as an "associated power" rather than an official ally. Other "associated members" included Serbia , Belgium , Montenegro , Asir , Nejd and Hasa , Portugal , Romania , Hejaz , Panama , Cuba , Greece , China , Siam , Brazil , Armenia , Luxembourg , Guatemala , Nicaragua , Costa Rica , Haiti , Liberia , and Honduras . The treaties signed at
1558-612: The Rufiji delta , and on 2 November, Dartmouth attempted to engage Königsberg or the supporting steamer Somali but the German ships were too far upstream to be successfully engaged. On 10 November, the British scuttled the collier Newbridge in the Rufiji River as a blockship to prevent Königsberg from escaping, and on 11 November, Dartmouth left to reinforce the Cape of Good Hope Station in
1640-602: The Treaty of Brest-Litovsk on 3 March 1918. Romania was forced to do the same in the May 1918 Treaty of Bucharest but on 10 November, it repudiated the Treaty and once more declared war on the Central Powers. These changes meant the Allies who negotiated the Treaty of Versailles in 1919 included the United Kingdom, France, Italy, Japan and the United States; Part One of the Treaty agreed to
1722-721: The United Kingdom , Russia , the United States , Italy , and Japan against the Central Powers of Germany , Austria-Hungary , the Ottoman Empire , and Bulgaria in World War I (1914–1918). By the end of the first decade of the 20th century, the major European powers were divided between the Triple Entente and the Triple Alliance . The Triple Entente was made up of the United Kingdom, France, and Russia. The Triple Alliance
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#17328483033551804-528: The Weymouth class, were an improved version of five similar Town-class ships laid down under the 1908–1909 Estimates, known as the Bristol class, with a heavier main armament of eight 6 inch (152 mm) Mk XI guns , compared with the two 6 inch and ten 4 inch of the earlier ships. The ships had a secondary armament of four Vickers 3-pounder (47 mm) guns , with two submerged 21 inch (533 mm) torpedo tubes mounted on
1886-573: The Yser Front throughout the war. This allowed Belgium to be treated as an Ally, in contrast to Luxembourg which retained control over domestic affairs but was occupied by the German military . In the East, between the 7th and 9th days of August the Russians entered German East Prussia on 7 August, Austrian Eastern Galicia . Japan joined the Entente by declaring war on Germany on 23 August, then Austria on 25 August. On 2 September, Japanese forces surrounded
1968-510: The assassination of Archduke Franz Ferdinand , heir to Emperor Franz Joseph I ; this brought Serbia's ally Montenegro into the war on 8 August and it attacked the Austrian naval base at Cattaro , modern Kotor. At the same time, German troops carried out the Schlieffen Plan , entering neutral Belgium and Luxembourg ; over 95% of Belgium was occupied but the Belgian Army held their lines on
2050-452: The 19th century, Britain sought to maintain the European balance of power without formal alliances, a policy known as splendid isolation . This left it dangerously exposed as Europe divided into opposing power blocs and the 1895–1905 Conservative government negotiated first the 1902 Anglo-Japanese Alliance , then the 1904 Entente Cordiale with France. The first tangible result of this shift
2132-427: The British army and Royal Navy were committed to support France in the event of war with Germany but even in the British government, very few were aware of the extent of these commitments. In response to Germany's declaration of war on Russia, France issued a general mobilisation in expectation of war on 2 August and on 3 August, Germany also declared war on France. Germany's ultimatum to Belgium brought Britain into
2214-573: The East. The growth of the Russian railway network and increase in speed of mobilisation made rapid victory over France even more important; to accommodate the additional 170,000 troops approved by the 1913 Army Bill, the 'incursion' now became a full-scale invasion. The Germans accepted the risk of British intervention; in common with most of Europe, they expected it to be a short war while their London Ambassador claimed civil war in Ireland would prevent Britain from assisting its Entente partners. On 3 August,
2296-720: The Entente in return for German territories in the Pacific, greatly annoying the Australian government which also wanted them. On 7 August 1914, Britain officially asked for assistance in destroying German naval units in China and Japan formally declared war on Germany on 23 August 1914, followed by Austria-Hungary on 25 August 1914. On 2 September 1914, Japanese forces surrounded the German Treaty Port of Qingdao , then known as Tsingtao, which surrendered on 7 November. The Imperial Japanese Navy simultaneously occupied German colonies in
2378-577: The French and German militaries accepted Germany would almost certainly violate Belgian neutrality in the event of war, the extent of that was unclear. The original Schlieffen Plan only required a limited incursion into the Belgian Ardennes , rather than a full-scale invasion; in September 1911, the Belgian Foreign Minister told a British Embassy official they would not call for assistance if
2460-424: The French lost nearly 300,000 dead on the Western Front, more than Britain suffered in the whole of WWII and the gaps were partly filled by colonial troops, over 500,000 of whom served on the Western Front over the period 1914–1918. Colonial troops also fought at Gallipoli , occupied Togo and Kamerun in West Africa and had a minor role in the Middle East, where France was the traditional protector of Christians in
2542-404: The German Treaty Port of Tsingtao (now Qingdao) in China and occupied German colonies in the Pacific, including the Mariana , Caroline , and Marshall Islands . Despite its membership of the Triple Alliance , Italy remained neutral until 23 May 1915 when it joined the Entente, declaring war on Austria but not Germany. On 17 January 1916, Montenegro capitulated and left the Entente; this
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2624-452: The Germans limited themselves to that. While neither Britain or France could allow Germany to occupy Belgium unopposed, a Belgian refusal to ask for help would complicate matters for the British Liberal government , which contained a significant isolationist element. However, the key German objective was to avoid war on two fronts; France had to be defeated before Russia could fully mobilise and give time for German forces to be transferred to
2706-419: The Italian Army , died on 1 July 1914, taking many of the prospects for Italian support with him. The Italian Prime Minister Antonio Salandra argued that as the Alliance was defensive in nature, Austria's aggression against Serbia and Italy's exclusion from the decision-making process meant it was not obliged to join them. His caution was understandable because France and Britain either supplied or controlled
2788-439: The Italian destroyer Borea and the freighter Carrocio , with the main cruiser attack on the drifter line starting at about 04:20 CET, with 14 of the lightly armed drifters sunk and four more damaged. Dartmouth , with the Italian Admiral Alfredo Acton , the overall commander of the Allied naval response aboard, left Brindisi at 05:36 CET in company with the Italian destroyers Simone Schiaffino and Giovanni Acerbi , and
2870-422: The Middle East. Australian troops separately occupied German New Guinea , with the South Africans doing the same in German South West Africa ; this resulted in the Maritz rebellion by former Boers, which was quickly suppressed. After the war, New Guinea and South-West Africa became Protectorates , held until 1975 and 1990 respectively. Between 1873 and 1887, Russia was allied with Germany and Austria-Hungary in
2952-410: The Otranto Barrage with insufficient resources to deter the U-boats , and only the Austro-Hungarian U-6 was caught by the indicator nets during the course of the war. It was later considered that the straits had simply been too wide to be netted, mined or patrolled effectively. The ease with which German and Austrian submarines continued out of the Austro-Hungarian ports in spite of the barrage (and
3034-409: The Otranto Straits . The British damaged Saida and disabled Novara , severely injuring Horthy. However, the British cruisers broke off the engagement when the Italian flag officer received notice of heavy Austrian forces coming out of Cattaro . Saida towed Novara back to port. Dartmouth was damaged by UC-25 as it returned to Brindisi . The night before, the same U-boat had laid a minefield at
3116-423: The Ottoman Empire, the centrepiece being the planned Berlin–Baghdad railway , with Serbia the only section not controlled by a pro-German state. The exact role played by Serbian officials in the assassination of Archduke Franz Ferdinand is still debated but despite complying with most of their demands, Austria-Hungary invaded on 28 July 1914. While Serbia successfully repulsed the Austro-Hungarian army in 1914, it
3198-437: The Ottoman provinces of Syria , Palestine and Lebanon . Prior to the Meiji Restoration in 1868, Japan was a semi-feudal, largely agrarian state with few natural resources and limited technology. By 1914, it had transformed itself into a modern industrial state, with a powerful military; by defeating China in the First Sino-Japanese War during 1894–1895, it established itself as the primary power in East Asia and colonised
3280-400: The Triple Entente with France, which at this stage was largely informal. In 1908, Austria annexed the former Ottoman province of Bosnia and Herzegovina ; Russia responded by creating the Balkan League in order to prevent further Austrian expansion. In the 1912–1913 First Balkan War , Serbia , Bulgaria and Greece captured most of the remaining Ottoman possessions in Europe; disputes over
3362-577: The actual results of the 1919 Treaty of Versailles would be powerful factors in the rise of Benito Mussolini . In 1817, the Principality of Serbia became an autonomous province within the Ottoman Empire ; with Russian support, it gained full independence after the 1877–1878 Russo-Turkish War . Many Serbs viewed Russia as protector of the South Slavs in general but also specifically against Bulgaria, where Russian objectives increasingly collided with Bulgarian nationalism . When Austria annexed Bosnia and Herzegovina in 1908, Russia responded by creating
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3444-418: The aftermath of the Battle of Coronel . In January 1915, Dartmouth was reassigned to the 2nd Light Cruiser Squadron of the Grand Fleet but was detached to operate in the South Atlantic in the search for the commerce raider SMS Karlsruhe . (Unknown to the Royal Navy, Karlsruhe had already been lost, sunk by an internal explosion on 4 November 1914 near Barbados.) In February 1915, Dartmouth
3526-400: The barrage, five in 1915, nine in 1916 and ten in 1917. After a raid by four Huszár -class destroyers in December 1916, a conference in London concluded that the drifters were insufficiently defended. The barrage was placed under the command of a British officer, Commodore Algernon Walker-Heneage-Vivian , who was able to call upon all Allied ships not in use elsewhere. His second-in-command
3608-462: The battleship SMS Szent István was torpedoed and sunk by an Italian torpedo boat at dawn on 10 June, resulting in the attack being cancelled. 40°13′00″N 18°55′00″E / 40.2167°N 18.9167°E / 40.2167; 18.9167 Allies of World War I Associated allies and co-belligerents: The Allies , the Entente or the Triple Entente was an international military coalition of countries led by France ,
3690-416: The defender of its fellow Slavs and on 30 July, mobilized in support of Serbia. In response, Germany declared war on Russia on 1 August, followed by Austria-Hungary on 6th; after Ottoman warships bombarded Odesa in late October, the Entente declared war on the Ottoman Empire in November 1914. French defeat in the 1870–1871 Franco-Prussian War led to the loss of the two provinces of Alsace-Lorraine and
3772-451: The division of these resulted in the Second Balkan War , in which Bulgaria was comprehensively defeated by its former allies. Russia's industrial base and railway network had significantly improved since 1905, although from a relatively low base; in 1913, Tsar Nicholas approved an increase in the Russian Army of over 500,000 men. Although there was no formal alliance between Russia and Serbia, their close bilateral links provided Russia with
3854-406: The end of the war; the introduction of the convoy system and better coordination amongst the Allies only helped to cut the losses they were causing after escaping the blockade. By contrast, the presence of Allied capital ships involved in the blockade was generally successful in its mission of keeping enemy surface vessels from leaving the Adriatic Sea. The Austrians mounted nighttime raids against
3936-404: The entire population. In 1830, the southern provinces of the Netherlands broke away to form the Kingdom of Belgium and their independence was confirmed by the 1839 Treaty of London . Article VII of the Treaty required Belgium to remain perpetually neutral and committed Austria, France, Germany and Russia to guarantee that against aggression by any other state, including the signatories. While
4018-414: The establishment of the League of Nations on 25 January 1919. This came into being on 16 January 1920 with Britain, France, Italy and Japan as permanent members of the Executive Council; the US Senate voted against ratification of the treaty on 19 March, thus preventing the United States from joining the League. For similar statistics of the Central Powers, see Central_Powers#Statistics . For much of
4100-409: The establishment of the Third Republic . The suppression of the Paris Commune by the new regime caused deep political divisions and led to a series of bitter political struggles, such as the Dreyfus affair . As a result, aggressive nationalism or Revanchism was one of the few areas to unite the French. The loss of Alsace-Lorraine deprived France of its natural defence line on the Rhine , while it
4182-530: The expansion of its railway network, particularly in border areas with Germany and Austria-Hungary. However, Russian defeat in the 1904–1905 Russo-Japanese War damaged its credibility, while Britain's isolation during the Second Boer War meant both countries sought additional allies. This resulted in the 1904 Entente Cordiale with Britain; like the 1907 Anglo-Russian Convention , for domestic British consumption it focused on settling colonial disputes but led to informal co-operation in other areas. By 1914, both
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#17328483033554264-422: The idea of an independent Albania , since this would prevent Serbian access to the Austrian-controlled Adriatic Sea . The success of the Albanian revolt in 1912 threatened Serbian ambitions for the incorporation of " Old Serbia " into its domain and exposed the weakness of the Ottoman Empire. This led to the outbreak of the First Balkan War , with Serbia , Montenegro , Bulgaria and Greece capturing most of
4346-446: The import of most of Italy's raw materials, including 90% of its coal. Salandra described the process of choosing a side as 'sacred egoism,' but as the war was expected to end before mid-1915 at the latest, making this decision became increasingly urgent. In line with Italy's obligations under the Triple Alliance, the bulk of the army was concentrated on Italy's border with France; in October, Pollio's replacement, General Luigi Cadorna ,
4428-433: The largest component (after Britain herself) was the British Raj or British India, which included modern India , Pakistan , Myanmar and Bangladesh . Unlike other colonies which came under the Colonial Office , it was governed directly by the India Office or by princes loyal to the British; it also controlled British interests in the Persian Gulf , such as the Trucial States and Oman . Over one million soldiers of
4510-409: The mouth of Brindisi harbour; the Boutefeu struck one of these mines exiting the harbour the very same day and exploded, sinking with all hands. In June 1918, Horthy—by now commander-in-chief of the Austro-Hungarian Navy—decided to launch an attack on the barrage employing the four Tegetthoff -class battleships based at Pola , the most modern in the fleet. While en route down the Adriatic,
4592-404: The outer shafts and low pressure turbines in a central compartment. The engines were rated at 22,000 shaft horsepower (16,000 kW), giving a design speed of 25 knots (46 km/h; 29 mph). The ship had four funnels. Dartmouth was launched on 14 February 1911, reaching a speed of 25.9 knots (48.0 km/h; 29.8 mph) during sea trials . She was completed in October 1911, at
4674-460: The port of Durazzo in Albania, and Dartmouth , together with the Italian cruiser Quarto and several French destroyers, set off to intercept the returning Austrian force, later being joined by Dartmouth ' s sister ship Weymouth and the Italian cruiser Nino Bixio . In the resulting Battle off Durazzo , Dartmouth scored several hits on the Austrian cruiser SMS Helgoland . On 14/15 May 1917, Dartmouth took part in
4756-406: The reassurance needed to take on Russia in the 1905 Russo-Japanese War ; victory established Japan in the Chinese province of Manchuria . With Japan as an ally in the Far East, John Fisher , First Sea Lord from 1904 to 1910, was able to refocus British naval resources in the North Sea to counter the threat from the Imperial German Navy . The Alliance was renewed in 1911; in 1914, Japan joined
4838-448: The remaining Ottoman possessions in Europe. Disputes over the division of these resulted in the Second Balkan War , in which Bulgaria was comprehensively defeated by its former allies. As a result of the 1913 Treaty of Bucharest , Serbia increased its territory by 100% and its population by 64%. However, it now faced a hostile Austria-Hungary, a resentful Bulgaria and resistance in its conquered territories . Germany too had ambitions in
4920-403: The risk was acceptable; they expected a short war while their ambassador in London claimed troubles in Ireland would prevent Britain from assisting France. On 3 August, Germany demanded unimpeded progress through any part of Belgium and when this was refused, invaded early on the morning of 4 August. This changed the situation; the invasion of Belgium consolidated political and public support for
5002-556: The ships' beams. Dartmouth was 453 feet (138.07 m) long overall , with a beam of 48 feet 6 inches (14.78 m) and a draught of 15 feet 6 inches (4.72 m). She displaced 5,250 long tons (5,330 t) normal and 5,800 long tons (5,900 t) deep load. Machinery was the same as in the Bristol class, with 12 Yarrow boilers feeding Parsons steam turbines , driving four shafts. The turbines were laid out in three separate engine rooms, with high pressure turbines, located in wing compartments, driving
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#17328483033555084-420: The success they had in disrupting shipping in the whole of the Mediterranean) strongly embarrassed the Allies, the system being called "a large sieve through which U-boats could pass with impunity". In 1917–1918, reinforcements from the Australian and American navies brought the blockading force up to 35 destroyers, 52 drifters and more than 100 other vessels. Nevertheless, submarines continued to slip through until
5166-519: The then-unified Korea and Formosa, now modern Taiwan . Concerned by Russian expansion in Korea and Manchuria , Britain and Japan signed the Anglo-Japanese Alliance on 30 January 1902, agreeing if either were attacked by a third party, the other would remain neutral and if attacked by two or more opponents, the other would come to its aid. This meant Japan could rely on British support in a war with Russia, if either France or Germany, which also had interests in China, decided to join them. This gave Japan
5248-412: The two into direct conflict, as did the long-held Russian objective of gaining control of the Bosporus Straits and with it access to the British-dominated Mediterranean Sea . Defeat in the 1905 Russo-Japanese War and Britain's isolation during the 1899–1902 Second Boer War led both parties to seek allies. The Anglo-Russian Convention of 1907 settled disputes in Asia and allowed the establishment of
5330-556: The war by presenting what appeared to be a simple moral and strategic choice. The Belgians asked for assistance under the 1839 Treaty and in response, Britain declared war on Germany on 4 August 1914. Although Germany's violation of Belgium neutrality was not the only cause of British entry into the war, it was used extensively in government propaganda at home and abroad to make the case for British intervention. This confusion arguably persists today. The declaration of war automatically involved all dominions and colonies and protectorates of
5412-432: The war on 4 August, although France did not declare war on Austria-Hungary until 12 August. As with Britain, France's colonies also became part of the war; pre-1914, French soldiers and politicians advocated using French African recruits to help compensate for France's demographic weakness. But it eventually proved useless, the soldiers from Metropolitan France still undertook all the tasks. From August to December 1914,
5494-518: Was British support for France against Germany in the 1905 Moroccan Crisis . The 1905–1915 Liberal government continued this re-alignment with the 1907 Anglo-Russian Convention . Like the Anglo-Japanese and Entente agreements, it focused on settling colonial disputes but by doing so paved the way for wider co-operation and allowed Britain to refocus resources in response to German naval expansion . Since control of Belgium allowed an opponent to threaten invasion or blockade British trade, preventing it
5576-444: Was a Town-class light cruiser built for the Royal Navy in the 1910s. She was one of the Weymouth sub-class of the Town class. The ship survived the First World War and was sold for scrap on 13 December 1930. Dartmouth was laid down by Vickers at their Barrow shipyard on 19 February 1910, one of four Town-class protected cruisers ordered under the 1909–1910 Naval Estimates. The four 1909–10 ships, also known as
5658-459: Was a failure, with three battleships sunk by mines , and several more ships heavily damages by mines or by Turkish gunfire. Dartmouth escorted the battlecruiser HMS Inflexible , badly damaged by striking a mine, to Tenedos . On 25 April, the Allies landed troops at Anzac Cove and Cape Helles on the Gallipoli peninsula, with Dartmouth taking part in a diversionary simulated landing further north, at Bulair . In May 1915, Dartmouth
5740-577: Was a long-standing British strategic interest. Under Article VII of the 1839 Treaty of London , Britain guaranteed Belgian neutrality against aggression by any other state, by force if required. Chancellor Theobald von Bethmann Hollweg later dismissed this as a 'scrap of paper,' but British law officers routinely confirmed it as a binding legal obligation and its importance was well understood by Germany. The 1911 Agadir Crisis led to secret discussions between France and Britain in case of war with Germany. These agreed that within two weeks of its outbreak,
5822-463: Was a surge of anti-Japanese nationalism in China and an economic boycott of Japanese goods. In addition, the other Allies now saw Japan as a threat, rather than a partner, lead to tensions first with Russia, then the US after it entered the war in April 1917. Despite protests from the other Allies, after the war Japan refused to return Qingdao and the province of Shandong to China. The 1882 Triple Alliance between Germany, Austria-Hungary and Italy
5904-490: Was another British officer, Commander Charles Edward Turle . The largest raid was carried out on the night of 14/15 May 1917 by the cruisers SMS Novara , Helgoland , and Saida supported by the destroyers SMS Csepel and Balaton and Austro-Hungarian U-boats U-4 and U-27 , along with German U-boat UC-25 (operating as Austro-Hungarian U-boat U-89 ). The fleet, commanded by Commodore Miklós Horthy , sank 14 drifters out of 47 on duty, and damaged
5986-564: Was effective in preventing surface ships from escaping the Adriatic, but it had little or no effect on the submarines based at Cattaro . The Adriatic is 72 km (39 nmi ; 45 mi ) wide at the Otranto Straits . The blockade consisted of over 200 vessels at its height, mainly British and French. A main force of up to 60 drifters were dedicated to anti-submarine operations. The drifters were mostly British and typically armed with
6068-462: Was exhausted by the two Balkan Wars and unable to replace its losses of men and equipment. In 1915, Bulgaria joined the Central Powers and by the end of the year, a combined Bulgar-Austrian-German army occupied most of Serbia. Between 1914 and 1918, Serbia suffered the greatest proportional losses of any combatant, with over 25% of all those mobilised becoming casualties; including civilians and deaths from disease, over 1.2 million died, nearly 30% of
6150-550: Was joined in the pursuit of the Austro-Hungarian cruisers by the Italian scout Aquila and the British cruiser Bristol . Dartmouth was hit several times by shellfire from Austro-Hungarian cruisers which she was pursuing, and had to heave to. Returning to port she was hit by a torpedo from the German submarine UC-25 and began sinking. The order to abandon ship was given but a small team volunteered to remain on board manning
6232-460: Was offset when Germany declared war on Portugal in March 1916, while Romania commenced hostilities against Austria on 27 August. On 6 April 1917, the United States entered the war as a co-belligerent, along with the associated allies of Liberia , Siam and Greece . After the 1917 October Revolution , Russia left the Entente and agreed to a separate peace with the Central Powers with the signing of
6314-524: Was ordered to begin moving these troops to the North-Eastern one with Austria. Under the April 1915 Treaty of London , Italy agreed to join the Entente in return for Italian-populated territories of Austria-Hungary and other concessions; in return, it declared war on Austria-Hungary in May 1915 as required, although not on Germany until 1916. Italian resentment at the difference between the promises of 1915 and
6396-436: Was originally composed of Germany, Austria–Hungary, and Italy, but Italy remained neutral in 1914. As the war progressed, each coalition added new members. Japan joined the Entente in 1914 and, despite proclaiming its neutrality at the beginning of the war, Italy also joined the Entente in 1915. The term "Allies" became more widely used than "Entente" , although the United Kingdom, France, Russia, and Italy were also referred to as
6478-515: Was reassigned to the 8th Light Cruiser Squadron at Brindisi , supporting Italian forces in the Adriatic Sea . Dartmouth ' s speed had been reduced to 21 knots (39 km/h; 24 mph) by the boiler explosion in March, and further boiler problems had reduced her speed to 16 knots (30 km/h; 18 mph) by June 1915. As a result, on 30 June Dartmouth paid off at Malta for a refit, not recommissioning until 1 October. On 28 December 1915, an Austrian force of cruisers and destroyers raided
6560-527: Was renewed at regular intervals, but was compromised by conflicting objectives between Italy and Austria in the Adriatic and Aegean seas. Italian nationalists referred to Austrian-held Istria (including Trieste and Fiume ) and Trento as 'the lost territories' , making the Alliance so controversial that the terms were kept secret until it expired in 1915. Alberto Pollio , the pro-Austrian Chief of Staff of
6642-527: Was sent to join the forces operating off the Dardanelles in support of the Gallipoli Campaign . On 15 March she suffered a boiler explosion that killed 15 of her crew. Despite this damage, Dartmouth continued operations, and on 18 March Dartmouth patrolled off the West coast of the Gallipoli peninsula while a final attempt was made by the battleships of the fleet to force the straits during daylight. The attack
6724-534: Was weaker demographically than Germany, whose 1911 population was 64.9 million to 39.6 in France, which had the lowest birthrate in Europe. This meant that despite their very different political systems, when Germany allowed the Reinsurance Treaty to lapse, France seized the opportunity to agree the 1894 Franco-Russian Alliance . It also replaced Germany as the primary source of financing for Russian industry and
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