Of the nearly 5,000-strong Canadian contingent, 3,367 were killed, wounded or taken prisoner, an exceptional casualty rate of 68 percent. The 1,000 British Commandos lost 247 men. The Royal Navy lost the destroyer "Berkeley" (on the return crossing, it was hit by bombs from a Fw 190 and then scuttled by "Albrighton") and 33 landing craft, suffering 550 dead and wounded. The RAF lost 106 aircraft. RAF Air Sea Rescue Services picked up around 20 pilots at the loss of three of Dover's five High Speed Launches. Among the RAF losses, six RAF aircraft had been shot down by gunners on their own side, one Typhoon was shot down by a Spitfire and two others were lost when their tails broke off (a structural issue with early Typhoons), and two Spitfires collided during the withdrawal across the Channel.