ShieldSable, a Maltese cross Argent.
CrestThat for the regiments and separate battalions of the Puerto Rico Army National Guard: On a wreath of the colors Argent and Sable upon a closed book Gules with pages edged Or a paschal lamb couchant with staff and banner of San Juan (Gules a cross Argent) all Proper.
MottoHonor Et Fidelitas (Honor and Fidelity).
ShieldThis was originally the Puerto Rico Regiment, name changed to 65th Infantry in 1920. Puerto Rico was discovered in 1493 by Columbus, and named by him "San Juan" which is still retained by the largest city, where the 65th Infantry has been stationed. The name "San Juan" was for the old military order of St. John of Jerusalem, later known as the Knights of Malta, whose habit was black with a white Maltese cross, which has accordingly been adopted for the shield of this Regiment.
CrestThe crest is that of the Puerto Rico Army National Guard.
The coat of arms was originally approved for the 65th Infantry Regiment on 9 February 1921. It was amended to delete the crest originally approved for the organization and add the Puerto Rico Army National Guard crest on 14 August 1961.