Naval Infantry Force

The Naval Infantry Force (Spanish: Fuerza de Infantería de Marina) are the marine corps and amphibious infantry force of the Mexican Navy. The main task of the Infantería de Marina is to guarantee the maritime security of the country's ports and external and internal defense of the country. To accomplish these responsibilities, the corps is trained and equipped to take on any type of operations from Sea, Air and Land.

The Naval Infantry Corps was reorganized in 2007–2009 into thirty Naval Infantry Battalions (Batallones de Infantería de Marina—BIM), a paratroop battalion, a battalion attached to the Presidential Guard Brigade, two Fast Reaction Forces with six battalions each, and three Special Forces groups. The Naval Infantry are responsible for port security, protection of the ten-kilometer coastal fringe, and patrolling major waterways.