One of the earliest and most successful production 4x4s was the FWD Model B, a 3-ton truck that was in production from 1912 to well into the ’20s, but it was sold refurbished up to at least 1939.

Some 14,473 FWD-designed Model B 3-ton 4x4 trucks were built for the U.S. Government in World War I. Additionally, thousands more were built for the various European countries allied against ...