 The 76 mm-armed M18 did see use in the Pacific late in the war.The 76 mm M1, while an improvement over the previous 75 mm, was a disappointment in its promised performance vis-à-vis the now common Panther tank and upgraded models of the Panzer IV H/J in the frontal arcs.This was the case of the 76 mm M1 versus the frontal armor of these tanks only.