ShieldAzure, a base barry wavy Argent and of the first, issuing from sinister base a bastion with sentry box showing door and lookout Or masoned Sable.
CrestThat for the regiments and separate battalions of the Puerto Rico Army National Guard: On a wreath of the colors Or and Azure, upon a closed book Gules with pages edged Or a paschal lamb couchant with staff and banner of San Jan (Gules a cross Argent) all Proper.
MottoALERTA ESTÁ (Alert He Is).
ShieldThe shield is blue for Infantry and bastion with sentry box that raises from the sea, which is represented by the barry wavy base, represents the 296th Infantry on the island of Puerto Rico, bravely defending the island. The motto was the reply of sentinels when questioned as to alertness by officers of the guard during tours of inspection.
CrestThe crest is that of the Puerto Rico Army National Guard.
The coat of arms was approved on 25 January 1941.