As the advance moved onto Tobruk, Streich continued to be conservative with the use of his forces and Rommel grew increasingly frustrated after attacks mounted on Tobruk on 12 and 13 April failed. Given a final chance to capture the port in early May, Streich failed again and Rommel relieved him of his command. Streich returned to Germany and "Generaloberst" Franz Halder, the head of the "Oberkommando des Heeres" (OKH) and an acquaintance from his time at the Army Ordnance Office, soon found him a new assignment on the Eastern Front.