In 1938, Hitler and Goering were behind the decision to push forward with the annexation of Austria. Hitler also steered his military generals towards preparation for a major European war from 1938, and purged any generals who opposed him during the Blomberg-Fritsch Affair. Hitler was central to events in Czechoslovakia in 1938 and 1939, as well as the decision to invade Poland in 1939, which, unlike the majority of his foreign policy decisions, wasn't initially popular with German people.