For their part, the Germans suffered from confusion in the ranks and the absence of celebrated commander Rommel, who was away on leave. At first, Hitler, believing the invasion was a feint designed to distract the Germans from a coming attack north of the Seine River, refused to release nearby divisions to join the counterattack. Reinforcements had to be called from further afield, causing delays. He also hesitated in calling for armored divisions to help in the defense. Moreover, the Germans were hampered by effective Allied air support, which took out many key bridges and forced the Germans to take long detours, as well as efficient Allied naval support, which helped protect advancing Allied troops.