Spanish Marine Infantry

The Spanish Marine Infantry (Spanish: Infantería de Marina; lit, Naval infantry) is the marine corps of the Spanish Navy (Armada Española) responsible for conducting amphibious warfare by utilizing naval platforms and resources. The Marine Corps is fully integrated into the Armada's structure.

The Corps was formed in 1537 by Charles I of Spain (also known as Charles V, Holy Roman Emperor), making it the oldest marine corps in existence in the world, drawing from the Compañías Viejas del Mar de Nápoles.