However , Hitler , embroiled in his invasion of the Soviet Union , refused to send Rommel any more troops .
Rommel managed to use his small force to repeatedly smash massively superior British forces and to recapture the port city of Tobruk and advance into Egypt .
Hitler , embroiled in his invasion of the Soviet Union , refused to send Rommel any more troops .
Rommel managed to use his small force to repeatedly smash massively superior British forces and to recapture the port city of Tobruk and advance into Egypt .