Laid down in 1912 and commissioned in 1913, Princess Royal served in the Battle of Heligoland Bight a month after the war began. She was then sent to the Caribbean to prevent the German East Asia Squadron from using the Panama Canal. After the East Asia Squadron was sunk at the Battle of the Falkland Islands in December 1914, Princess Royal rejoined the 1st Battlecruiser Squadron. During the Battle of Dogger Bank, Princess Royal scored only a few hits, although one crippled the German armoured cruiser Blücher. Shortly afterwards, she became the flagship of the 1st Battlecruiser Squadron, under the command of Rear-Admiral Osmond Brock.