Today in WW II: 21 Apr 1943 Luftwaffe blitz raid on Aberdeen, Scotland is the worst there for WW II. 127 bombs dropped, 98 civilians and 27 servicemen killed, heavy property damage.  More 
21 Apr 1945 Soviet Red Army reaches Berlin.
21 Apr 1945 In Northern Italy, Bologna falls to the US 34th Infantry Division.
Visit the Olive-Drab.com World War II Timeline for day-by-day events 1939-1945! See also WW2 Books.

Chart of Military Dolly and Dolly Sets

M197A1 Dolly, Trailer Converter: 6-ton, 2-Wheel at the US Marine Corps Mechanized Museum, Camp Pendleton, CA
M197A1 Dolly, Trailer Converter: 6-ton, 2-Wheel at the US Marine Corps Mechanized Museum, Camp Pendleton, CA.

Military Dolly and Dolly Sets are used to convert semitrailers into full trailers. Dolly Set Mobilizers are made for the purpose of making containers or transportable shelters towable by attaching to both ends and lifting the weight onto the dolly set mobilizer wheels.

Vehicle Description Photo Link
K-83 K-83 Dolly, Trailer Converter (G-695)
Used with K76A & B semitrailers
General Electric constructed a dolly for the SCR-584 radar vam, designated K-83. The K-83 was designed to attach to a semi-trailer hitch, allowing smaller vehicles to move the SCR-854
 
M197 M197 Dolly, Trailer Converter, 6-ton, 2-Wheel (G-800
M197 NSN 330-00-835-8615, M197A1 NSN 2330-00-569-0782, TM 9-2330-203-14&P
 
M198 M198 Dolly, Trailer Converter, 8-ton, 2-Wheel (G-800)
M198 NSN 2330-00-287-5203, M198A1 NSN 2330-00-563-7248, TM 9-2330-203-14&P
 
M199 M199 Dolly, Trailer Converter, 18-ton (G-811)  
M354 M354 Dolly, Trailer Converter, 18-Ton, 4-Wheel (G-706)  
M363 M363 Dolly, Trailer Converter, 7 1/2-tons (G-706)  
M365 M365 Dolly, Trailer Converter, 10-tons (G-676)  
M689 M689 Dolly Set, Lift, Transportable Shelter
NSN 2330-00-226-6076, TM 9-2330-275-14&P
 
M720 M720 Dolly Set, Lift, Transportable Shelter: 3-Ton
NSN 2330-00-912-4251, TM 9-2330-285-14&P
 
M832 M832 Dolly Set, Lift, Transportable Shelter: 5 1/4-Ton
NSN 2330-00-221 -4939, TM 9-2330-275-14&P
 
M840 M840 Dolly Set, Lift, Transportable Shelter: 4 1/2-Ton
NSN 2330-00-937-1175, TM 9-2330-275-14&P
 
M1022 M1022 Dolly Set, Lift, Transportable Shelter: 7 1/2-Ton
NSN 2330-01-167-7262, TM 9-2330-379-14&P