The guard of honour is also mounted for state visits. Units which mount the guard for state visits include the Spanish Army's "Monteros de Espinosa" (includes three platoons, and a drill team); the "Mar Océano" Navy and Marine Composite Company (includes three platoons); and the "Plus Ultra" Air Force Squadron (includes three flights). The 1st King's Immemorial Infantry Regiment maintains a guard of honour unit known as the "Old Guard of Castille" Battalion ("Guardias Viejas de Castilla"). The Spanish Air Force Honour Squadron ("Escuadrilla de Honores del Ejército del Aire") is an independent honour guard the serves the air force. From 1937 to 1956, the Guardia Mora served as the mounted guard of honour for Francoist Spain, part of a bigger combined arms guard of honour regiment of personnel from service branches of the Armed Forces.