On the next day, B-24s of 2nd Bomb division of the Eighth Air Force bombed Gotha. JG 1 (under Oesau), JG 11 and JG 3 were sent to intercept. Due to high winds, the bombers were ahead of the escorts unprotected. Two groups of JG 1 met them before Gotha and 9 B-24s were claimed as a result. Since B-17s of 1st Bomb division also bombed Schweinfurt, other fighter units also arrived to intercept, eventually involving almost all the Western day fighter units of the Luftwaffe. This caused some confusion among pilots landing on airfields other than their own. This tested the directive of Schmid. Oesau led one of two such improvised formations successfully, with the other led by Hauptmann Borris of I./JG 26 Oesau added 4 fighters to his score between January and March 1944, and his tally stood at 117. On 8 May 1944 he claimed a Thunderbolt shot down over Hanover; his last kill.