 These were later known simply as RN Commandos, and they did not see action until they successfully fought for control of the landing beaches (as in the disastrous Dieppe Raid of 19 August 1942).The RN Commandos, including Commando "W" from the Royal Canadian Navy, saw action on D-Day.In 1942, the Royal Navy's nine Royal Marines infantry battalions were reorganized as Commandos, numbered from 40 to 48, joining the British Army Commandos in combined Commando Brigades.