is ▁were ▁di vert ed ▁to ▁produce ▁more ▁of ▁the ▁Ch aff ee ▁light ▁tank . ▁ ▁The ▁M 1 9 ▁M G MC ▁arrived ▁too ▁late ▁to ▁serve ▁in ▁Europe ▁in ▁World ▁War ▁II ▁with ▁the ▁U . S . ▁Army . ▁It ▁was ▁never ▁delivered ▁to ▁other ▁countries ▁for ▁L end - Le ase ▁or ▁the ▁Military ▁A id ▁Program ▁( though ▁a ▁few ▁examples ▁were ▁transferred ▁to ▁the ▁newly ▁established ▁J GS DF ▁in ▁ 1 9 5 4 ). ▁It ▁served ▁in ▁the ▁Korean ▁War , ▁mostly ▁as ▁an ▁assault ▁gun . ▁It ▁was ▁used ▁in ▁the ▁defense ▁against ▁the ▁North ▁Korean ▁forces ▁on ▁the ▁Eastern ▁side ▁of ▁the ▁Ch os in ▁Res er voir ▁by ▁US ▁Army ▁units ▁of ▁the ▁ 3 1 st ▁and ▁ 3 2 nd ▁Infantry ▁as ▁well ▁as ▁in ▁the ▁P us an ▁Per imeter ▁fighting ▁and ▁later ▁fighting ▁in ▁Korea . ▁The ▁ 4 0   mm ▁guns ▁were ▁especially ▁effective ▁against ▁Chinese ▁mass ▁inf antry ▁charges ▁in ▁North ▁Korea . ▁ ▁Compar able ▁vehicles ▁▁ 4 0 M ▁N im ród ▁ ▁Cr us ader ▁M k . ▁III ▁Anti - A ircraft ▁T ank ▁M k . ▁I ▁ ▁K ugel bl itz ▁ ▁M ö bel wagen ▁ ▁Ost wind ▁ ▁Z SU - 3 7 ▁ ▁See ▁also ▁ ▁M 4 2 ▁D uster ▁- ▁similar ▁system ▁based ▁on ▁ ▁M 4 1 ▁light ▁tank ▁List ▁of ▁U . S . ▁military ▁vehicles ▁by ▁model ▁number ▁ ▁List