A large hatch M4A3 75w this photo was taken on Okinawa. The crew seems to be hamming it up for the photographer, so not in combat. This tank has two large plates welded onto the front plate, these are probably for the T6 Floatation Device, also known as the M19, basically large solid, semi modular floats attached by cable to the front and rear of the Sherman, with side sections to give it so rigidity. The whole thing dropped off when the cables holding it place were cut.
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not a happy soldier