There are two battles that might meet that criteria. Both occurred in WWII.
1. The 1942 "Battle of the Philippines", in which US Army General Wainwright surrendered the largest US military force in...
The Battle of Chosin Reservoir, the Chinese effectively ended UN (US) occupation of North Korea.
Pearl Harbor
Actually, I would disagree. A strong case can be made that this...
The fall of Singapore was arguably the worst defeat in British military history. Britain thought that Singapore was protected, as huge guns pointed out to sea. They did not think it was possible to...