[3] It remained in force until 17 April 1944,[4] when the Allied strategic bomber commands based in Britain were directed to help with preparations for Operation Overlord.
With modification in June, making German fighters (part of their main defence against Allied bombers) an "intermediate target " and the primary goal, it gave direction to the combined (USAAF and RAF) bombing offensive known as Operation Pointblank.
The discussions brought up several issues, such as how to phrase the memorandum to balance the concerns of the different stake-holders about the priority to give to anti-U-boat activities as opposed to support for the planned operations to take place in the Mediterranean theatre.
[7] A modified version of the Casablanca directive as sent to RAF Bomber Command on 4 February 1943: (a) Submarine construction yards.
version – objectives of great but fleeting importance such as the German Fleet – and point 7 which was redundant as RAF Bomber Command already obeyed orders originating from the Chiefs of Staff Committee (British Chiefs of Staff) whatever their military or political origins.
Despite the lack of an explicit mention of "point 4" in the Bomber Command version of the directive, Bomber Command was involved in attacking the German capital ships only a few days after this directive reached them, when along with the Royal Navy and its Fleet Air Arm they failed to prevent the successful "Channel Dash" made by the Scharnhorst, Gneisenau, Prinz Eugen, supported by a number of smaller ships, from France to their home ports.