HMS Tamar was the name for the British Royal Navy's base in Hong Kong from 1897 to 1997. It took its name from HMS Tamar, a ship that was used as the base until replaced by buildings ashore.

The Battle of Hong Kong, also known as the Defence of Hong Kong and the Fall of Hong Kong, was one of the first battles of the Pacific War in World War II. On the same morning as the attack on Pearl Harbor, forces of the Empire of Japan attacked the British Crown colony of Hong Kong around the same time that Japan declared war on Great Britain. The Hong Kong garrison consisted of British, Indian and Canadian units, also the Auxiliary Defence Units and Hong Kong Volunteer Defence Corps (HKVDC).