40 Commando RM is a battalion-sized formation of the British Royal Marines and subordinate unit within 3 Commando Brigade, the principal Commando formation, under the Operational Command of Commander in Chief Fleet.Tasked as a Commando light infantry unit, 40 Commando (pronounced "Forty Commando") is capable of a wide range of operational tasks. Based at Norton Manor Camp, Norton Fitzwarren their barracks is in Taunton, Somerset.