A total of four Special Service Brigades (later Commando brigade) were raised during the war, and Royal Marines were represented in all of them. A total of nine RM Commandos (Battalions) were raised during the war, numbered from 40 to 48. 1 Commando Brigade had just one RM Battalion, No 45 Commando. 2 Commando Brigade had two RM battalions, Nos 40 and 43 Commandos. 3 Commando Brigade also had two, Nos 42 and 44 Commandos. 4 Commando Brigade was entirely Royal Marine after March 1944, comprising Nos 41, 46, 47 and 48 Commandos. 1 Commando Brigade took part in first in the Tunisia Campaign and then assaults on Sicily and Normandy, campaigns in the Rhineland and crossing the Rhine. 2 Commando Brigade was involved in the Salerno landings, Anzio, Comacchio, and operations in the Argenta Gap. 3 Commando Brigade served in Sicily and Burma. 4 Commando Brigade served in the Battle of Normandy and in the Battle of the Scheldt on the island of Walcheren during the clearing of Antwerp.