MES meaning in Governmental ?

The Military Engineer Services (MES) is an inter-service organisation with military and civilian components of its officers and subordinate staff. MES is one of the oldest and largest government defence infrastructure-development agencies in India. Construction work is done with contracts, but maintenance is conducted by departmentally-employed labour (DEL) and contracts. MES is primarily employed in engineering and construction for the Indian Armed Forces, including the Army, Navy, Air Force, the Ordnance Factory Board, and the DRDO. It is also involved in complex projects, including hospitals, airfields, buildings, workshops, roads, runways, hangars, dockyards, wharves, and other marine structures. MES has been entrusted with the construction of the Indian National War Memorial.

Indian Army Corps of Engineers officers form the MES' military component. Its civilian component consists of the Indian Defence Service Engineers (IDSE) and the Indian Defence Contract Management Service (IDCMS). The surveyor, architect and barrack/stores cadres are selected through the Indian Engineering Services and the Union Public Service Commission (UPSC).