[2] For services in these two battles, he was brevetted to full colonel and commanded a brigade of regulars in David E. Twiggs' division of the Army of Occupation.

Garland joined Winfield Scott's army and, for the second time in his career, he was serving under William Worth, who was now his division commander.

He had survived the war thus far without any serious injury, but when he marched his brigade into fallen Mexico City, he was hit in the chest by a Mexican sharpshooter and severely wounded.

He stayed loyal to the Union, despite being from Virginia and his close ties with James Longstreet, who soon became a prominent Confederate general.

His services to the North were short lived however, as he died on June 5, 1861, in New York City while still on active duty.