10 aircraft lost, 2.4% of the force.[33] 13/14 April 1943 nuisance raid 2 Mosquitoes.[34] 25 June 1943 Blohm & Voss Mission Number 67: 275 B-17 are to attack submarine pens and industrial areas of Hamburg and Bremen, but the primary targets are obscured by cloud so the bombers hit 167 bomb "targets of opportunity in NW Germany".[35] The 384th Bombardment Group of the USAAF are involved in the attack of an initial 19 aircraft, 11 aborted the mission and only 5 joined the combat wing.[36] night of 26/27 June 1943 nuisance raid 4 Mosquitoes.[37] night of 28/29 June 1943 nuisance raid 4 Mosquitoes.[37] night of 3/4 July 1943 nuisance raid 4 Mosquitoes.[9] night of 5/6 July 1943 nuisance raid 4 Mosquitoes.[9] night of 24/25 July 1943 large raid 791 Halifaxes and Lancasters marked the opening of the "Battle of Hamburg" or so called "Operation Gomorrah raid".