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3 February Turkish forces cross the Sinai Desert and assault the Suez Canal. The attack is strongly defeated.
15 February Spurred by the Ghadar party’s efforts for revolution, four companies of the 5th Light Infantry in Singapore mutiny, killing a number of European civilians and soldiers. Leaders of the mutiny are later executed in public.
19 February Royal Navy ships begin shelling the forts guarding the entrance to the Dardanelles in Turkey. The aim is for the ships to force their way through the Dardanelles and capture the Turkish capital, Constantinople (present day Istanbul).
10 March

Battle of Neuve Chapelle. British and Indian troops undertake their first offensive in France with limited success. Rifleman Gobar Singh Negi, 1/39 Garhwal Rifles wins the Victoria Cross in this action.

11 March

Royal Navy warships begin a concerted blockade of Germany and its ports.

12 March Britain forms the Mediterranean Expeditionary Force under General Sir Ian Hamilton to carry out military operations at the Dardanelles.
19 March The Defence of India Act with emergency powers to restrict revolutionary activity by expanding discretionary powers of the police during the War is passed. This includes the powers to detain revolutionaries without trial.
19 March

British and French warships at the Dardanelles try to force their way through the Narrows. Three ships are sunk; three are badly damaged. Naval operations are suspended.

27 March

The First Lahore Conspiracy Case Trial (King Emperor versus Anand Kishore and Others) is held. Ghadar revolutionaries are tried and sentenced to death or long terms of imprisonment.

March/April 1915-July 1918

Hindi and Urdu newsletters are produced for Indian Prisoners of War in Germany. These serve as propaganda for the Germans...

9 April

Gen Sir John Nixon lands at Bara and takes command of the British-Indian forces in Mespotamia.

12-14 April

Battle of Shaiba. Turkish forces defeated. Their commander, Suleiman Askeri, commits suicide.

22 April

Second Battle of Ypres. Germans launch major assault on French, British, Indian and Canadian troops around Ypres and use poison gas extensively for the first time. Fighting continues until 27 May.

24 April

Battle of St. Julien. Germans attack Canadian part of Ypres Salient. The British and Indian troops counter-attack to recapture lost ground.

25 April

First landing at Gallipoli. British, Indian, French, Australian and New Zealand troops land on and around the Gallipoli peninsula in support of the naval attack on the Dardanelles. Fighting continues until January 1916.

25 April-6 June

Battle of Helles in Gallipoli.

26 April

Jemadar Mir Dast, 55th Coke's Rifles leads his men with great bravery during the attack at Wieltje, Belgium. He is awarded the Victoria Cross.

9 May

Battle of Aubers Ridge. To support French operations in Artois, British and Indian troops attack in French Flanders but achieve no real gains. Battle continues until 10 May.

12 May

First Battle of Krithia in Gallipoli.

15 May

Battle of Festubert. British and Indian troops undertake another attack in French Flanders only a short distance from Aubers Ridge. Battle carries on until 25 May.

19 May

Defence of Anzac. At Gallipoli, Australian, New Zealand and Indian troops fight off a very heavy Turkish attack. After weeks of effort on both sides, it is clear stalemate has been reached.

23 May

Italy declares war on Austria-Hungary and moves to secure strategically important points along their shared border.

31 May-3 Jun Maj Gen Townshend with Indian VI Division defeats an entrenched Turkish force north of Qurnah. He pursues the retreating Turks up the Tigris and occupies Amarah.
6 August

Second landing at Gallipoli. After all attempts to move inland have been defeated, a new British and Indian landing is made at Suvla Bay, linked to an assault on the hills beyond the Australian and New Zealand position. The operations fail.

6-10 August

Battle of Sari Bair in Gallipoli.

21 August

Battle of Scimitar Hill.

15 September

"Berlin Committee (later the Indian Independence committee) promoting the cause of Indian independence during the First World War is formed. Notable members include Virendranath Chattopadhyay (Chatto)....

25 September

Co-ordinated Allied offensive in France, with French attacks in the Second Battle of Champagne and Third Battle of Artois, and British and Indian attacks at the Battle of Loos. The fighting at Loos carries on until 4 November.

25 September

Rifleman Kulbir Thapa, 3rd Gurkha Rifles, is awarded the Victoria Cross. Having been wounded himself, he found a wounded soldier of The Leicestershire Regiment behind the first line German trench. Although urged to save himself, the Gurkha stayed with the wounded man all day and night...

28 September

Battle of Kut Al Amara.

5 October

British and French troops land in the Greek city of Salonika to support Serbia, by threatening the southern flank of Bulgaria.

15 October

General Sir Ian Hamilton is replaced in command at Gallipoli by General Sir Charles Monro.

October 1915-1916

The Niedermayer-Hentig expedition organised by the German foreign office and headed by the Bavarian officer Oscar Niedermayer, a Prussian diplomat Werner-Otto von Hentig....

10 November

Indian infantry begins to leave France in order to transfer to Mesopotamia.

22 November

Battle of Ctesiphon. In Mesopotamia, Turkish forces stop the Anglo-Indian advance on Baghdad only 40 km (25 miles) south of the city. Maj Gen Townshend falls back on Kut Al Amara.

1 December

The provisional Government of India in exile is formed in Kabul headed by Raja Mahendra Pratap, Ubaidullah Sindhi, Champakaraman Pillai and Maulana Barkatullah. At the time, Sindhi was working....

7 December

Siege of Kut begins. After their defeat at Ctesiphon, Anglo-Indian troops fall back on Kut Al Amara where they are surrounded by Turkish forces. They eventually surrender on 29 April 1916.

19 December

General Sir Douglas Haig replaces Field Marshal Sir John French as Commander in Chief of the British Expeditionary Force in France and Belgium.

20 December

Troops evacuated from the Suvla and Anzac beachheads at Gallipoli.

25 December

‘The Christmas Day Plot’, a planned uprising in Bengal by the revolutionary organisation Jugantar with the help of German arms, in coordination with the Ghadar party’s plan to initiate uprisings in Burma and Siam. This plan is thwarted by British intelligence.