In March 1944, the 1st and 2nd SAS Regiments returned to the United Kingdom and joined a newly formed SAS Brigade of the Army Air Corps. The other units in the Brigade were the French 3rd and 4th SAS, the Belgian 5th SAS and F Squadron which was responsible for signals and communications, the brigade commander was Brigadier Roderick McLeod. The brigade was ordered to swap their beige SAS berets for the maroon parachute beret and given shoulder titles for 1, 2, 3 and 4 SAS in the Airborne colours. The French and Belgian regiments also wore the Airborne Pegasus arm badge. The brigade now entered a period of training for their participation in the Normandy Invasion. They were prevented from conducting operations until after the start of the invasion by 21st Army Group. Their task was then to stop German reinforcements reaching the front line, by being parachuted behind the lines to assist the French Resistance.