VehiclesM9 Half-trackCar, Half-track, M9Car, Half-track, M9FamilyM5/M9 Half-trackClassTractorNative classHalf-trackChangesInternational Harvester build with a short body comparable to the M2 and a RED-450-B engine of 141 hp.Produced3,433Service193719381939194019411942194319441945Soviet Union · Eastern Front≈ Oct 1943 – May 1945United Kingdom · Western Europe≈ Jun 1944 – May 1945France · Western Europe≈ Aug 1944 – May 1945United Kingdom · Western Europe≈ Jun 1944 – May 1945France · Western Europe≈ Aug 1944 – May 1945Modifications 2193719381939194019411942194319441945M9 Half-track (Pedestal Mount)2,026≈ Oct 1943 – May 1945≈ Jun 1944 – May 1945≈ Aug 1944 – May 1945M9A1 Half-track1,407≈ Jun 1944 – May 1945≈ Aug 1944 – May 1945