- vagabond
Yeah Costas, I was wondering about that. I included it in the gallery for the very reason of asking about it. Of. course, I promptly forgot to do so - thanks for the reminder! LOL!
In the museum display, in which that photo was included, there were MANY other photos of M7s with crews that showed the same attachment - even a drawing (I'll post it later). All from the 495th Armored Field Artillery Battalion.
I think I have the answer: It's to increase exterior stowage. The drawing of it you posted, the one with the tarp/air IFF panel was a hint. I looked in the 12th's website photo page, where there is a photo album dedicated to the 495th and sure enough the pan appears to have stuff in it. To top it off, if you look closely, the M7s featuring the pan have also been fitted with wire baskets on top of the rear roof stowage bins, plus another large wooden box on the extreme rear of the hull roof. Given the stowage modifications to their halftracks, it looks like the unit went for more but neat.