After the First World War broke out in Europe, Almirante Latorre was formally purchased by the United Kingdom on 9 September 1914; it was not forcibly seized like other ships being built in British yards for foreign navies (such as the battleships Reşadiye and Sultân Osmân-ı Evvel for the Ottoman Empire) because the Allies' reliance on Chilean Sodium nitrate for munitions made retention of Chile's "friendly neutral" status with the United Kingdom a matter of vital importance.
Almirante Latorre was renamed HMS Canada and slightly modified for British service.
The bridge was taken off in favor of two open platforms, and a mast was added in between the two funnels to support a derrick that would service launches.
The super-dreadnought completed fitting-out on 20 September 1915, and was commissioned into the Royal Navy on 15 October.

She initially served with the 4th Battle Squadron of the Grand Fleet.
Canada saw action in the Battle of Jutland on 31 May–1 June 1916 under Captain William Nicholson.
She fired 42 rounds from its 14-inch guns and 109 6-inch shells during the battle, and suffered no hits or casualties.
During the battle, it got off two salvoes at the disabled cruiser Wiesbaden at 18:40, and fired five more at an unknown ship around 19:20.
It fired its 6-inch guns at German destroyers at 19:11.

Canada was transferred to the 1st Battle Squadron on 12 June 1916.
In 1917–18, it was fitted with better rangefinders and range dials, and two of the aft 6-inch secondary guns were removed after they suffered blast damage from the middle 14-inch turret.
In the latter year, flying-off platforms for aircraft were added atop the superfiring turrets fore and aft.
Canada was put into the reserve fleet in March 1919.
After the First World War broke out in Europe, Almirante Latorre was formally purchased by the United Kingdom on 9 September 1914; it was not forcibly seized like other ships being built in British yards for foreign navies (such as the battleships Reşadiye and Sultân Osmân-ı Evvel for the Ottoman Empire) because the Allies' reliance on Chilean Sodium nitrate for munitions made retention of Chile's "friendly neutral" status with the United Kingdom a matter of vital importance. Almirante Latorre was renamed HMS Canada and slightly modified for British service. The bridge was taken off in favor of two open platforms, and a mast was added in between the two funnels to support a derrick that would service launches. The super-dreadnought completed fitting-out on 20 September 1915, and was commissioned into the Royal Navy on 15 October.
She initially served with the 4th Battle Squadron of the Grand Fleet. Canada saw action in the Battle of Jutland on 31 May–1 June 1916 under Captain William Nicholson. She fired 42 rounds from its 14-inch guns and 109 6-inch shells during the battle, and suffered no hits or casualties. During the battle, it got off two salvoes at the disabled cruiser Wiesbaden at 18:40, and fired five more at an unknown ship around 19:20. It fired its 6-inch guns at German destroyers at 19:11. 
Canada was transferred to the 1st Battle Squadron on 12 June 1916. In 1917–18, it was fitted with better rangefinders and range dials, and two of the aft 6-inch secondary guns were removed after they suffered blast damage from the middle 14-inch turret. In the latter year, flying-off platforms for aircraft were added atop the superfiring turrets fore and aft. Canada was put into the reserve fleet in March 1919.
Chilean battleship Almirante Latorre