 The unit began tank destroyer training with the M3 GMC destroyer but was reorganized as a towed battalion, using the 3 inch Gun M5, pulled by the M3 half-track, on 17 July 1943.On 18 July, the unit was assigned to the Tank Destroyer Center Training Brigade as school troops; assisting with training of new troops.In October, Lt. Col. Kennon was transferred and Lt. Col. Frank S. Pritchard assumed command on the 16th.