Lent claimed his first nocturnal victory on 12 May 1941 and on 30 August 1941 was awarded the Knight's Cross of the Iron Cross for 22 victories. His steady accumulation of aerial victories resulted in regular promotions and awards. On the night of 15 June 1944, "Major" Lent was the first night fighter pilot to claim 100 nocturnal aerial victories, a feat which earned him the Knight's Cross of the Iron Cross with Oak Leaves, Swords and Diamonds on 31 July 1944.