World War II: Gunners of the Ceylon Garrison Artillery on Horsburgh Island in the Cocos Islands rebel in the Cocos Islands Mutiny. Their mutiny is crushed and three of them are executed

The Cocos (Keeling) Islands, officially the Territory of Cocos (Keeling) Islands, are an Australian external territory located in the Indian Ocean, comprising a small archipelago approximately midway between Australia and Sri Lanka and relatively close to the Indonesian island of Sumatra. The territory's dual name reflects that the islands have historically been known as either the Cocos Islands or the Keeling Islands.