Fought during World War One (1914-18) from 25 April 1915 to 9 January 1916, Gallipoli was the first major amphibious operation in modern warfare. British Empire and French troops landed on the Ottoman-held peninsula in the Dardanelles Straits with disastrous consequences for the Allies.

Gurkha soldiers resting in a trench at Gallipoli, 1915.

Gurkha soldiers resting in a trench at Gallipoli, 1915.

Indian soldiers in a trench, Gallipoli, 1915.

Indian soldiers in a trench, Gallipoli, 1915.

'General Liman von Sanders Pascha', 1917 (c).

‘General Liman von Sanders Pascha’, 1917 (c).

Eating in the trenches, March 1917.

Eating in the trenches, March 1917.

North beach, north of Anzac Cove, 1915.

North beach, north of Anzac Cove, 1915.

General Headquarters, Imbros, 1915.

General Headquarters, Imbros, 1915.

'V' Beach, Cape Helles, April 1915.

‘V’ Beach, Cape Helles, April 1915.

Barbed wire near Sedd-el-Bahr, 1915.

Barbed wire near Sedd-el-Bahr, 1915.

Horses picketed on the beach, 1915.

Horses picketed on the beach, 1915.

A French 75 mm gun in action at Cape Helles, 4 June 1915.

A French 75 mm gun in action at Cape Helles, 4 June 1915.

The converted steamer 'River Clyde', Gallipoli, Spring 1915.

The converted steamer ‘River Clyde’, Gallipoli, Spring 1915.

Church service on HMS 'Queen Elizabeth', 1915.

Church service on HMS ‘Queen Elizabeth’, 1915.

Anzac in the snow, November 1915.

Anzac in the snow, November 1915.

Royal Buckinghamshire Hussars at Giza, 1916 (c).

Royal Buckinghamshire Hussars at Giza, 1916 (c).

Gurkha Rifles in bivouacs, 1915.

Gurkha Rifles in bivouacs, 1915.

Turkish prisoners being marched to a camp at Cape Helles, 1915.

Turkish prisoners being marched to a camp at Cape Helles, 1915.

General Hunter Weston & two of his Staff outside dug-out, 1915.

General Hunter Weston & two of his Staff outside dug-out, 1915.

Turkish emissary with white flag being led...', May 1915.

Turkish emissary with white flag being led…’, May 1915.

A welcome rest in a trench...', August 1915.

A welcome rest in a trench…’, August 1915.

Turks who fell on the scrub covered slopes...', 1915.

Turks who fell on the scrub covered slopes…’, 1915.

Having consolidated the surrounding ridges...', 1915.

Having consolidated the surrounding ridges…’, 1915.

Our reserves awaiting orders to move up...', 1915.

Our reserves awaiting orders to move up…’, 1915.

Cardinal Bourne visits Irish troops at the Front, 1916 (c).

Cardinal Bourne visits Irish troops at the Front, 1916 (c).

Chocolate Hill at Suvla Bay, Gallipoli, 1915.

Chocolate Hill at Suvla Bay, Gallipoli, 1915.

Soldiers dug in at Chocolate Hill, Suvla Bay, Gallipoli, 1915.

Soldiers dug in at Chocolate Hill, Suvla Bay, Gallipoli, 1915.

A Sikh soldier in a sandbagged gun emplacement, 1915.

A Sikh soldier in a sandbagged gun emplacement, 1915.

A biplane preparing to take off

A biplane preparing to take off

Soldiers at Anzac Cove, Gallipoli, 1915.

Soldiers at Anzac Cove, Gallipoli, 1915.

Using a trench periscope, Gallipoli, 1915.

Using a trench periscope, Gallipoli, 1915.

Barbed wire, Gallipoli, 1915.

Barbed wire, Gallipoli, 1915.

Indian soldiers in a trench, Gallipoli, 1915.

Indian soldiers in a trench, Gallipoli, 1915.

Troops of 29th Indian Infantry Brigade, Gallipoli, 1915.

Troops of 29th Indian Infantry Brigade, Gallipoli, 1915.

Camouflaged tanks and infantry moving up to the attack, 1917.

Camouflaged tanks and infantry moving up to the attack, 1917.

Join The Lancashire Fusiliers', 1920 (c).

Join The Lancashire Fusiliers’, 1920 (c).

Lt Rosser give M.G. instruction to Lt Silk.

Lt Rosser give M.G. instruction to Lt Silk.

Comradeship! Territorials'.

Comradeship! Territorials’.

Artillery ammunition carriage being unloaded.

Artillery ammunition carriage being unloaded.

Trench Diagram, 1915.

Trench Diagram, 1915.

Brusa (of series Turkey 1 to 250,000).

Brusa (of series Turkey 1 to 250,000).

Report of actions - 25 Apr - 25 Jun 1915 in Gallipoli, 6 of 6

Report of actions – 25 Apr – 25 Jun 1915 in Gallipoli, 6 of 6

Report of actions - 25 Apr - 25 Jun 1915 in Gallipoli, 5 of 6

Report of actions – 25 Apr – 25 Jun 1915 in Gallipoli, 5 of 6

Report of actions - 25 Apr - 25 Jun 1915 in Gallipoli, 4 of 6

Report of actions – 25 Apr – 25 Jun 1915 in Gallipoli, 4 of 6

Report of actions - 25 Apr - 25 Jun 1915 in Gallipoli, 3 of 6

Report of actions – 25 Apr – 25 Jun 1915 in Gallipoli, 3 of 6

Report of actions - 25 Apr - 25 Jun 1915 in Gallipoli, 2 of 6

Report of actions – 25 Apr – 25 Jun 1915 in Gallipoli, 2 of 6

Report of actions - 25 Apr - 25 Jun 1915 in Gallipoli, 1 of 6

Report of actions – 25 Apr – 25 Jun 1915 in Gallipoli, 1 of 6

Withdrawal of Gallipoli, 13-16 Dec 1916. 1 of 2.

Withdrawal of Gallipoli, 13-16 Dec 1916. 1 of 2.

Withdrawal of Gallipoli, 13-16 Dec 1916. 1 of 2.

Withdrawal of Gallipoli, 13-16 Dec 1916. 1 of 2.

General Aylmer Hunter-Weston's message, 4 July 1916.

General Aylmer Hunter-Weston’s message, 4 July 1916.