sentences:  Clark-Hall received Phillimore's approval and the Commander-in-Chief of the Grand Fleet David Beatty's permission.It was originally planned to use Sopwith 1½ Strutters in an attack, but these were too valuable for reconnaissance purposes and Sopwith Camels were substituted, whose range limitations meant an attack on the airship base at Tønder.The initial attack on Tønder, named Operation F.6 called for two waves of four aircraft, each pilot receiving special training.