The Battle of Hong Kong lasted 18 days from December 8 to December 25, 1941, a rapid Japanese assault from the China mainland border to the final surrender on "Black Christmas". https://gwulo.com/node/14227/view-pages
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Battle of Hong Kong Casualties by Regiment
Total battle casualties for the Battle of Hong Kong in December 1941 exceeded 4,000 men across the multinational garrison as follows (source - google)
•Hong Kong Volunteer Defence Corps (HKVDC): 470 total casualties (196 killed, 139 wounded, 135 missing/other)
=============== Civilian casualties during the 18-day Battle of Hong Kong (December 8–25, 1941) are estimated at roughly 4,000 killed and wounded.
Japanese casualties during the Battle of Hong Kong (December 8–25, 1941) officially totaled around 1,995 killed and 2,300 to 6,000 wounded. ===============
Mainland Fighting (December 8–13)
December 8: Japanese forces crossed the Shum Chun River into the New Territories and bombed Kai Tak Airport, destroying the local air force.
December 9–10: Japanese troops breached the British defensive positions at the Gin Drinker's Line in a surprise night attack, forcing an immediate Commonwealth retreat.
December 11–13: Defenders pulled back from the mainland entirely; the last British and Indian units evacuated across Victoria Harbour to Hong Kong Island on December 12 under heavy fire.
December 14–17: Japanese forces under Lieutenant General Tadayoshi Sano launched massive daily artillery bombardments and air raids on Victoria and Wanchai, twice demanding a surrender that Governor Mark Young refused.
December 20–24: Canadian, British, and Indian forces made isolated, bloody counter-attacks and desperate stands while water supplies dwindled and communications fractured.
