The 11 Luchtmobiele Brigade (Air Assault) '7 December' (11 Luchtmobiele Brigade, or 11 LMB) is the rapid-reaction air assault unit of the Royal Netherlands Army. Its operators are trained to be deployed via helicopters (using fast-rope and rappelling) and fixed wing aircraft (parachute), and can be deployed anywhere in the world within 7 to maximally 20 days. Combined with the helicopters of the Royal Netherlands Air Force, they form the 11 Air Manoeuvre Brigade (11 AMB).