 Complete the following phrase:  Boxer returned to London for a two-year posting from 193536 to the military intelligence section of the War Office. Posted to Hong Kong in 1936, he served as a General Staff Officer 3rd grade GSO3 with British troops in China at Hong Kong, doing intelligence work. Between 1937 and 1941, Boxer, promoted from captain to major, became one of the key members of the Far East Combined Bureau, a British intelligence organisation that extended from Shanghai to Singapore. By 1940, most of its Hong Kong office had been transferred to Singapore, leaving Boxer as the armys chief intelligence officer in the colony. In 1940, he was advanced to General Staff Officer 2nd grade GSO2. Wounded in action during the 