Topic summary
Gallipoli campaign

Naval support:
Supported by:
Egyptian Labour Corps
Maltese Labour Corps
French Foreign Legion
ANZAC
Naval Forces
Royal Navy
French Navy
Royal Australian Navy
Land Forces
5th Army
German military mission
Naval Forces
Ottoman Navy
German submarines
5 divisions (initial)
15 divisions (final)
Total: 489,000–550,000
- 345,000 British (including Irish, Indians and Newfoundlanders)
- 79,000 French
- c. 50,000 Australians
- c. 15,000 New Zealanders
Supported by:
- Royal Navy
- 2 Aircraft Carriers
- 1 Dreadnaught
- 3 Battlecruisers
- 24 Battleships
- 20 Cruisers
- 25 Destroyers
- 8 Monitors
- 8 Submarines
- 12 Other ships
- French Navy
- Royal Australian Navy
- Imperial Russian Navy
- 1 Cruiser
6 divisions (initial)
16 divisions (final)
Total: 250,000–315,500
- c. 700 Germans
Coastal and Naval Artillery Batteries
- Ottoman Navy
- 1 Battlecruiser
- 1 Battleship
- 1 Light Cruiser
- 1 Destroyer
- 1 Torpedo Boat
- 1 Ironclad
- 1 Cruiser
- 1 Coastal Defence Ship
- 1 Minelayer
- Imperial German Navy
- Allies :
- 252,000–300,000 casualties
- 43,000–61,398 dead
- 7 battleships
- 8 submarines
- 1 destroyer
- 2 troop transports
- 3 aircraft
- 25 artillery pieces
- Ottoman Empire :
- 255,268–289,160 casualties
- 56,938–87,000 dead
- 1 battleship
- 1 cruiser
- 1 ironclad
- 1 coastal defence ship
The Gallipoli campaign, the Dardanelles campaign, the Defence of Gallipoli or the Battle of Gallipoli (Turkish: Gelibolu Muharebesi, Çanakkale Muharebeleri or Çanakkale Savaşı) was a military campaign in the First World War on the Gallipoli Peninsula (now Gelibolu) from 19 February 1915 to 9 January 1916. The Allied powers (Britain, France and the Russian Empire) unsuccessfully attempted to make the Ottoman Empire, one of the Central Powers, capitulate by taking control of the Turkish straits. They intended to expose the Ottoman capital at Constantinople to bombardment by Allied warships and cut it off from the Asian part of the empire. An Ottoman Empire defeat could have led to unfettered Western control of the Suez Canal and the opening of the Bosphorus and Dardanelles straits to Allied supplies headed for the Black Sea and warm-water ports in Russia.
In February 1915, the Allied fleet failed to force a passage through the Dardanelles. An amphibious landing on the Gallipoli peninsula began in April 1915. In January 1916, after eight months' fighting, with approximately 250,000 casualties on each side, the land campaign was abandoned and the invasion force was withdrawn. It was a costly campaign for the Allied powers and the Ottoman Empire as well as for the sponsors of the expedition, especially the First Lord of the Admiralty (1911–1915), Winston Churchill. The campaign is considered a Turkish victory.
In Turkey, it is regarded as a defining moment in the country's history. Mustafa Kemal Atatürk, who rose to prominence as a commander at Gallipoli, became the founder and first president of the Republic of Turkey in 1923. The campaign is considered by some to be the beginning of Australian and New Zealand national consciousness. The anniversary of the landings, 25 April, is known as Anzac Day, the most significant commemoration of military casualties and veterans in the two countries, surpassing Remembrance Day (Armistice Day).