Paul has it correct, they were generally bare bones vehicles. If you look at the ID tag that Tim has posted, the contract number begins with DA. Military tactical (and commercial design) vehicles were purchased under contracts negotiated by the Department of the Army Tank and Automotive Command in Warren, Michigan. Agencies would submit their requirements and specifications to them and be included in established orders. Navy vehicles were painted navy gray up until the mid 80's when the standard colors were changed to white.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine