The Invasion of Czechoslovakia, also known as the 1938 Defensive War (Czech: Československá obranná vojna 1938) in Czechoslovakia and the Czechoslovak Campaign (German: Feldzug in Tschechoslowakei) in Germany, was an invasion of Czechoslovakia carried out by Nazi Germany, while its ally Hungary used the opportunity to satisfy its own territorial claims and started its own independent military operations against Czechoslovakia. The invasion began on October 1, 1938, a day after the Czech government refused to abide to the Munich Agreement, and ended November 26 with Germany and Hungary dividing and annexing the whole of Czechoslovakia.