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Citizens of Bosnia-Herzegovinad were unhappy with Austrian rule and favoured Serbia.
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Austria-Hungary wants to arrest the leaders who were responsible for the assassination of Ferdinand
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The Austro-Hungarian government makes fifteen demands on the Serbian government. This includes the demand they arrest the leaders of the Black Hand group. The Serbian government appeal to Russia for help against the proposed attack by the Austro-Hungarian Army.
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Russia promises that it will help Serbia if it is attacked by Austro-Hungary. Austro-Hungarian declares war on Serbia.
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Big Berthas were the largest, most-powerful mobile artillery pieces in use by any army. The gun could fire projectiles weighing up to 1,785 pounds and six miles
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Reacting to the Austrian attack on Serbia, Russia begins full mobilization of its troops. This leads to Germany declaring war on Russia
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France and Germany declared war on each other. This broadened the conflict that began a week earlier with the assassination of Franz Ferdinand
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The Schlieffen Plan was the operational plan for a designated attack on France once Russia, in response to international tension, had started to mobilise her forces near the German border.
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Belgium's ports were close to the British coast and German control of Belgium would have been seen as a serious threat to Britain. Germany than began to move in inside Belgium.
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When Germany attacked France through Belgium. Within hours, Britain declared war on Germany.
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Big Bertha was a lethal mortar type weapon in WW1. It had fire projectiles weighing up to 1,785, and shot up to six miles.
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The French Army, led by Ferdinand Foch, Auguste Dubail and Michel Maunoury marched into Lorraine.
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British Army sent to the Western Front during the First World War. Planning for a British Expeditionary Force began with the Haldane reforms of the British Army carried out by the Secretary of State for War Richard Haldane
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the British Expeditionary Force and the German army at Mons, Belgium, during the Battle of the Frontiers in the opening weeks of World War I.
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The German 8th Army, under the leadership of Paul von Hindenburg and Erich Ludendorff, strikes with lethal force against the advancing Russian 2nd Army, led by General Aleksandr Samsonov, in East Prussia during the opening weeks of the First World War.
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The First Battle of Heligoland Bight was the first naval battle of the First World War, between ships of the United Kingdom and Germany. The battle took place in the south-eastern North Sea, when the British attacked German patrols off the north-west German coast.
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some 30 miles northeast of Paris, the French 6th Army under the command of General Michel-Joseph Manoury attacks the right flank of the German 1st Army, beginning the decisive First Battle of the Marne at the end of the first month of World War I.
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The British Expeditionary Force launched a frontal assault at the Aisne. They initially won a singe bridgehead but a German counter-attack, drove the Allies back to the river.
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In what became known as the "Race to the Sea", during the First World War. It followed the First Battle of the Aisne as both sides moved northwards, trying to turn the northern flank of their opponent.
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A British offensive on the Western Front during World War I. British troops attacked German defences near the French city of Arras on the Western Front.
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Fought on the Western Front around Ypres, in West Flanders, Belgium.
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The Ottoman Empire joined the Central Powers to form the Triple Alliance with the signing of the Turco-German Alliance.
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A naval engagement near the Dogger Bank in the North Sea, during the First World War, between squadrons of the British Grand Fleet and the German High Seas Fleet.
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German forces shock Allied soldiers along the Western Front by firing more than 150 tons of lethal chlorine gas against two French colonial divisions at Ypres in Belgium.
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Germany waged submarine warfare against the United Kingdom which had implemented a naval blockade of Germany. The ship was identified and torpedoed by the German U-boat U-20 and sank in 18 minutes.
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The Italian declaration opened up a new front in World War I, stretching 600 kilometers—most of them mountainous—along Italy’s border with Austria-Hungary.
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Twelve battles along the Isonzo River on the eastern sector of the Italian Front in World War I.
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In response to the trench warfare the British made the tank.
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Britain and France commit their troops to operate in Salonica, Greece.
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Britain Nurse Edith Cavell was executed by a German firing squad.
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This act meant people between the ages 18-40 could serve in the military.
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A war fought between the German and French army fought on the western front. This is the longest battle of this World War.
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With the outbreak of World War I in, Portugal became increasingly anxious about the security of its colonial holdings in Angola and Mozambique. In order to secure international support for its authority in Africa, Portugal entered the war on the side of Britain and the Allies. Its participation was at first limited to naval support. However, Portugal sent its first troops. Germany later then declared war.
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A naval battle fought between Britain's Royal Navy Grand Fleet, and the Imperial German Navy's High Seas Fleet.
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British cruiser Hampshire strikes a German mine and sinks off the Orkney Islands, but among the passengers and crew drowned. One of the people drowned was Lord Kitchener.
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The most successful Italian offensive along the Soča River.
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A battle fought by the armies of the British Empire and French Third Republic against the German Empire. This battle was fought on both sides of the upper reaches of the River Somme in France.
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The telegram was intercepted and decoded by British intelligence. This made Americans mad, so they wanted to fight back.
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This battle was fought in the Allied attempt to defeat Turkish forces in and around the Palestinian city.
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President Woodrow Wilson went before a joint session of Congress to request a declaration of war against Germany. Woodrow later declared war on German.
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A British offensive on the Western Front where British troops attacked German defences near the French city of Arras.
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This was the main part of the Nivelle Offensive, a Franco-British attempt to inflict a decisive defeat on the German armies in France.
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The British Army this week used tanks for the first time in battle in an attempt to break the stalemate in the Battle of the Somme.
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Female combat units formed after the February Revolution by the Russian Provisional Government in a last-ditch effort to inspire the mass of war-weary soldiers.
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Pershing was appointed Commander-in-Chief of the American Expeditionary Force in Europe. His belief that his fit, fresh troops could break the deadlock on the Western Front.
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Orders were given for 20 mines to be placed under German lines at Messines. Over the next few months more than 8,000 metres of tunnel were dug and 600 tons of explosive were placed in position. Employing 2,300 guns and 300 heavy mortars. Simultaneous explosion of the mines took place. The blast killed an estimated 10,000 soldiers.
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Only 14,000 American soldiers had arrived in France, and the AEF had only a minor participation at the front through late October, but by May over one million American troops were stationed in France.
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About several weeks after King Constantine abdicates his throne in Athens from being under pressure by the Allies. Greece declared war on the Central Powers
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This battle was also known as the Third Battle of Ypres, which was fought by the Allies against the German Empire.
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A British attack followed by the biggest German counter-attack against the British Expeditionary Force.
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By the end of the fall, by facing a lack of support from the government, the leadership of the Battalion disbanded.
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Maude died of cholera in Baghdad.
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Wilson set down 14 points as a blueprint for world peace. These points were taken as the basis for peace negotiations at the end of the war.
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The Spring Offensive was a series of German attacks along the Western Front. Beginning on March 21st, this marked the deepest advances by either side.
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The German army begins the Third Battle of the Aisne with an attack on the Allied positions at the Chemin des Dames ridge in the Aisne River region of France.
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A successful attack by Australian Army and US Army infantry, supported by British tanks, against German positions.
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The Second Battle of the Marne was the last major German offensive on the Western Front. The attack failed when an Allied counterattacked and overwhelmed Germany's right side flank.
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After being overwhelmed on the right side flank. Germany is forced to retreat, which resulted in an Allied victory against the German armies in the west.
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The Battle of Amiens, also known as the Third Battle of Picardy... was the opening phase of the Allied offensive.
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A battle fought involving the AEF and roughly 110,000 French troops under the command of General John J. Pershing of the United States against German positions.
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A major part of the final Allied offensive that stretched along the entire Western Front.
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The Battle of Canal du Nord was fought by the Allies against German positions on the Western Front.
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The Hindenburg Line was a German defensive position, which was invaded by the Allies.
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On the Italian Front, the Italian victory marked the end of the war on the Italian Front.
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Following the abdication statement and German Revolution, the German nobility as a legally defined class was abolished.
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The Armistice was the event that ended fighting on land, sea and air in World War I between the Allies and their opponents.
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After the war ended the U.K. election was held shortly after. Where Lloyd George won the election
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The Paris Peace Conference which was also known as Versailles Peace Conference. This was the meeting of the Allied Powers following the end of World War I to set the peace terms for the defeated Central Powers.
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The Treaty of Versailles was one of the most important parts of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers.
