Now i've seen one of these before but cant think for the life of me where!
I'm pretty sure its an Airborne medics haversack/pack.It was worn strapped to the front of the body during the jump.
I could of course be completely wrong too!
That does make sense of all the pockets, thanks for the start.
I've now found the picture i was thinking of.Its in USMC uniforms&equipment 1941-45.There is a picture of a group of medics tending to some wounded marines and one of them is wearing this item.
Very nice item!
Thanks so much for looking, I took the information you gave me and still had no luck. I'll try again.
Heres the picture.I managed to find on google images.Sorry for the small image.Its the medic on the right.
It is an S14 Paramarine medic's bag.
Looking for WWII U.S. dog tags