Today in WW II: 25 Jan 1942 Thailand, independent but occupied by Japanese troops, declares war on the United States and England.   

Chart of Military Vehicle Cargo Trailers

US Airmen with the 374th Airlift Wing prepare to load an M1101 Light Tactical Trailer onto a C-130 Hercules aircraft during the engine running on/offload (ERO) competition of the Air Mobility Rodeo 2011, Joint Base Lewis-McChord, WA, 25 July 2011
US Airmen with the 374th Airlift Wing prepare to load an M1101 Light Tactical Trailer onto a C-130 Hercules aircraft during the engine running on/offload (ERO) competition of the Air Mobility Rodeo 2011, Joint Base Lewis-McChord, WA, 25 July 2011.

Military vehicle trailers for general cargo are designed to be used with a specific truck or range of trucks so that the towed weight matches the capacity of the prime mover. Wheels and tires are often the same on the truck and the trailer, providing more capability to recover from a flat tire or damaged wheel. Trailers with a lunette match the height of the truck's pintle within a reasonable range. The intervehicular cable from the trailer matches the socket on the truck.

Vehicle Description Photo Link
G-518 Trailer, Cargo, 2 Wheel, 1 ton, World War II (G-518) Trailer, Cargo, 2 Wheel, 1 ton, World War II (G518)
M-101 Trailer, 3/4 ton (G748). Commonly used with M-37 and larger trucks including HMMWV. Variants A1 and A2. M-101 Trailer, 3/4 ton. Commonly used with M-37 and larger trucks including HMMWV. Variants A1 and A2.
M-104 M-104 1 1/2 ton 2-Wheel Cargo Trailer (G-754) M-104 Trailer, 1 1/2 ton
M-105 M-105 1 1/2 ton 2-Wheel Cargo Trailer (G-754) M-105 Trailer, 1 1/2 ton
LTT/HMT
M1101 & M1102		 Light Tactical Trailer / High Mobility Trailer
Models M1101, M1102 and Chassis		 M-1102 Trailer, 5/4 ton. Used with HMMWV
FMTV Family of Medium Tactical Vehicles (FMTV)
Two trailers (2.5 ton and 5 ton) described on the linked page and subpages. 		Trailer Family of Medium Tactical Vehicles (FMTV)
MTVR Cargo USMC Medium Tactical Vehicle Replacement (MTVR) Cargo Trailer (MK105) USMC Medium Tactical Vehicle Replacement (MTVR) Cargo Trailer (MK105)