Having been reinforced and retrained, 41 Commando joined the other Commandos in UK in the preparations for the landings in Normandy. On D-Day 41 and 45 Commandos landed on Sword Beach on the left, 48 Commando on Juno in the centre and 47 Commando on Gold Beach on the right. 46 Commando landed next day, also on Juno Beach. Together with those in the bombarding ships, manning landing craft, serving with the Armoured Support Group and beach parties, these RM Commandos were part of the 17,500 members of the Corps taking part in the landings, the biggest concentration of Royal Marines in action together in the history of the Corps. The Corps played a fitting part in the Second World War. Its strength peaked at over 74,000, of which 7,542were killed or wounded. The change to the Commando role was a significant development in the history of the Royal Marines, as it marked the start of what was to be a permanent function, thus securing the future of the Corps.