 The lack of success in Norway, and the withdrawal of the forces attempting to retake Trondheim, resulted in the collapse of Chamberlain's Government.Carton de Wiart, considered a daring and aggressive commander, was – per historian Jack Adams – "hampered by ... climatic and geographic conditions" and his troops were "inexperienced, poorly prepared and badly backed up".As early as mid-May 1940, while the Battle of France was still being waged, the British Government began to fear that Germany would immediately launch an invasion of the British Isles.