The vehicle on the left is a 1924 Cadillac V-63 with a V-8 engine. It is a radio reconnaissance car with the retracted radio mast mounted to the left side, and a machine gun mounted on the right - the machine gunner would perch over the running board. The Abbreviation on the hood is "USA EXP" which stand for US Army Experimental. The same car with the radio mast extended, as viewed for the other side
The car on the right is the same, but a 1925 Cadillac with the machine gun dismounted.
Fort Bliss is a United States Army post with its headquarters in El Paso, Texas. Named in honor of LTC William Bliss, a mathematics professor who was the son-in-law of President Zachary Taylor














