WW1 Timeline CAT By gracewyatt Jun 28, 1914 Francis Ferdinand assassinated at Sarajevo Period: Jun 28, 1914 to Nov 11, 1918 WW1 Jul 28, 1914 Austria declared war on Serbia Aug 1, 1914 Germany declared war on Russia Aug 2, 1914 Turkey signed a secret treaty with Germany against Russia. Aug 3, 1914 Germany declared war on France and invaded Belgium. Germany had to implement the Schlieffen Plan. Aug 4, 1914 Britain declared war on Germany Aug 14, 1914 The Dardanelles are closed for Allied ships Oct 29, 1914 Turkey entered the war Jan 3, 1915 British War Council discusses aid to Russia Jan 15, 1915 A French submarine called 'Saphir' sank in the Dardanelles near the town of Çannakale Jan 28, 1915 The definitive plans for an attack on the Dardanelles are officially accepted Feb 16, 1915 War Council decides to concentrate troops in the area of Dardanelles Mar 5, 1915 Minor Naval activity at Dardanelles Apr 15, 1915 Begin of The Battle of Gallipoli Apr 25, 1915 The ANZAC's land at Anzac cove Apr 26, 1915 Australian submarine 'HMAS AE2' becomes the first Allied vessel to pass through the Dardanelles into the Sea of Marmara Apr 28, 1915 The Anzac landing is reinforced by four battalions from the Royal Naval Division Jul 7, 1915 Secret treaty between Germany and Bulgaria signed Aug 12, 1915 The 5th Norfolks disappear during an attack at Suvla and enter history as 'the Vanished Battalion' Aug 20, 1915 Italy declares war on Turkey. Sep 20, 1915 Allied offensive in France begins. Sep 20, 1915 Bulgarian treaty with Turkey announced Oct 13, 1915 Lord Milner and Lord Ribblesdale urge evacuation of Gallipoli Dec 7, 1915 The British Cabinet orders the evacuation of Anzac and Suvla Dec 18, 1915 Start of final evacuation of Anzac and Suvla. Aug 8, 1916 Lieutenant D Chapman was killed at Pozières, France Nov 11, 1918 WW1 ends