On 3 November at the main German naval base in Kiel, frustrated German sailors mutinied instead of following orders to attack the British Royal Navy. The sailors’ mutiny sparked rebellions all over Germany and in a matter of days led to the collapse of the German government which forced the ruling monarch, Kaiser Wilhelm II, to abdicate on 9 November. Friedrich Ebert, leader of the Social Democratic Party (SDP) became Chancellor (the equivalent of Prime Minister in Britain) and took power over Germany.