M123 and M125 10ton 6x6 trucks Wikipedia
History. In 1949 the US Army set a requirement for a family of extra heavyduty 10‑ton (9,072 kg) offroad load rated 6x6 tactical trucks. Mack''s design, influenced by their WWII era NO, was as an entire family, only the semitractor and cargo/prime mover were built. 392 M123s were built between 1955 and 1957 and 552 M125s in 1957 and 1958.