I believe the French used "Long Tom" 155mm cannons in Indochina, (1946-1954) however, I cannot find any sources that refer to vehicles that would have towed them. Since C.E.F.E.O. was critically short of everything, the M-4, as used by the U.S., may not have been available.
Any help on this would be greatly appreciated.
Thank you,
P.N.
