 On 10/11 March the Luftwaffe returned Portsmouth and to the West Midlands on the night of the 11/12.pitted its entire strength including "Stab"./KG 55 against Birmingham.The attack is notable as 5 "staffel" of II./KG 55 lost two He 111s to night fighters this night—Pilot "Feldwebel" Karl Brüning became a prisoner of war but his crew were killed by a Boulton Paul Defiant from No.