Equipment Support, sometimes abbreviated as ES, is a term used to describe maintenance and supply duties of certain military regiments in the West. The term is also occasionally described as 'materiel', however this term usually refers to the supply of equipment, rather than the actual practice of providing support for certain items.
In the British Army, the term is used to describe those units and duties where maintenance units provide support to certain vehicles and equipment. In addition, the term is sometimes used in the following terms "... responsible for maintenance and repairing the Army's equipment'.[1]
Under British Army doctrine, equipment support is defined as follows:[2]