Combat support in the context of "Individual Ready Reserve"

Combat arms (or fighting arms in non-American parlance) are troops within national armed forces who participate in direct tactical ground combat. In general, they are units that carry or employ weapons, such as infantry, cavalry, and artillery units. The use of multiple combat arms in mutually supporting ways is known as combined arms. In some armies, notably the British Army and Canadian Army, artillery and combat engineer units are categorized as combat support, while in others, such as the U.S. Army, they are considered part of the combat arms. Armored troops constitute a combat arm in name, although many have histories derived from cavalry units.

Artillery is included as a combat arm primarily based on the history of employing cannons in close combat, and later in the anti-tank role until the advent of anti-tank guided missiles. The inclusion of special forces in some armed forces as a separate combat arm is often doctrinal because the troops of special forces units are essentially specialized infantry, often with historical links to ordinary light infantry units.

The Royal Netherlands Marine Corps (Dutch: Korps Mariniers) is the elite naval infantry corps of the Royal Netherlands Navy, one of the four Armed Forces of the Kingdom of the Netherlands. The marines trace their origins to the establishment of the Regiment de Marine on 10 December 1665, by the then grand pensionary of the Dutch Republic, Johan de Witt and famous Admiral Michiel de Ruyter. It is the second-oldest still-active marine corps in the world.

The present-day Corps is a rapid reaction force that can be deployed to any location in the world within a maximum of 48 hours. The marines are capable of operating in all environments and climates, specialising in expeditionary warfare, amphibious warfare, arctic warfare and mountain warfare. The core fighting element of the corps consists of two battalion-sized Marine Combat Groups (MCGs) which are supplemented by various combat support and combat service support squadrons. In addition, the Netherlands Maritime Special Operations Forces (NLMARSOF) are capable of conducting the full spectrum of special operations.

Auxiliaries are support personnel that assist the military or police but are organised differently from regular forces. Auxiliary may be military volunteers undertaking support functions or performing certain duties such as garrison troops, usually on a part-time basis. Unlike a military reserve force, an auxiliary force does not necessarily have the same degree of training or ranking structure as regular soldiers, and it may or may not be integrated into a fighting force. Some auxiliaries, however, are militias composed of former active duty military personnel and have better training and combat experience than their regular counterparts.

The designation "auxiliary" has also been given to foreign or allied troops in the service of a nation at war. The term originated with the Latin eponymous Auxilia relating to non-citizen infantry and cavalry serving as regular units of the Roman Empire. In the context of colonial troops, locally recruited irregulars were often described as auxiliaries.

The brigade combat team (BCT) is the basic deployable unit of maneuver in the U.S. Army. A brigade combat team consists of one combat arms branch maneuver brigade and its assigned support and fire units. A brigade is normally commanded by a colonel (O-6) although in some cases a brigadier general (O-7) may assume command. A brigade combat team contains combat support and combat service support units necessary to sustain its operations. BCTs contain organic artillery training and support, received from the parent division artillery (DIVARTY). There are four types of brigade combat teams: infantry, Stryker, armored, and mobile.

Currently, the U.S. Army is structured around the brigade combat team. In this program, divisions that previously had not deployed individual brigades due to a lack of integral support have now been restructured. The 1st Armored Division, 25th Infantry Division, etc. now can deploy one or more BCTs anywhere in the world. These BCTs are intended to be able to stand on their own, like a division in miniature. The soldiers assigned to a BCT will stay at their assignment for three years; this is intended to bolster readiness and improve unit cohesion.

An armoured vehicle-launched bridge (AVLB), also known as a bridgelayer (especially for nonarmoured variants), or tank bridge, is a combat support vehicle, sometimes regarded as a subtype of military engineering vehicle, designed to assist militaries in rapidly deploying tanks and other armoured fighting vehicles across gap-type obstacles, such as rivers. The AVLB is usually a tracked vehicle converted from a tank chassis to carry a folding metal bridge instead of weapons. The AVLB's job is to allow armoured or infantry units to cross craters, anti-tank ditches, blown bridges, railroad cuts, canals, rivers and ravines. When a river too deep for vehicles to wade through is reached, and no bridge is conveniently located, or sufficiently sturdy, a substantial concern when moving 60-ton tanks.

The bridge layer unfolds and launches its cargo, providing a ready-made bridge across the obstacle in only minutes. Once the span has been put in place, the AVLB vehicle detaches from the bridge, and moves aside to allow traffic to pass. Once all of the vehicles have crossed, it crosses the bridge itself and reattaches to the bridge on the other side. It then retracts the span ready to move off again. A similar procedure can be employed to allow crossings of small chasms or similar obstructions.

A regimental combat team (RCT) is a provisional major infantry unit which has seen use by branches of the United States Armed Forces. It is formed by augmenting a regular infantry regiment with smaller combat, combat support and combat service support units.

The United States Army first adopted the RCT concept just prior to World War II, where it served as the infantry-centric counterpart to the Combat Command used by armored forces. RCTs were widely used during World War II and the Korean War but were disbanded after the adoption of the Pentomic structure in 1957.