This is the bottom half of a USMC M-1941 pack. The top half had the shoulder straps and the strap across the top of this passed through loops on the top half. Only the top half was worn in combat. The other bag you posted is, I think not absolutely sure, a US demolition bag.  

Here is an item in my collection.  The cap and tunic belonged to Hugh Card Brown. A Canadian by birth he and his parents emigrated to the US in 1926 when he was 7 years old.  Brown joined the RAF in December 1941 as a Pilot Officer, and was posted to 133 Eagle Squadron.  On March 16, 1942, somewhere over the English Channel, he was posted MIA.  (age 22)  He and his aircraft were never located.

Yes and there are two letters inside. Not sure where he picked this up in the Pacific, his daughter said it was taken off a dead Japanese soldier. He was with the 4th Marine Air Wing. 

Here is another unidentified bag I have. Google tells me it is a Polish gas mask bag but I would like to confirm. It's well made with a button pocket on each side, what looks like leg tie straps on the back, and two compartments inside. Thanks for any help Mark

I've had this kicking around the house for a while and am wondering what nationality and what it was used for if even military. No markings and the opening does not have a drawstring or cover or anything to close it. Thanks for any help Mark

hello. I would like to have opinions on this police hat and its estimate,,, thank you

A Sergeant with a helmet cover Italiano, could be Italy or in the East or West, in this latter case a man of one of those divisions that got reassigned, i.e. the 3r Panzer Grenadier Division, the 24th Panzer Division etc

The handwriting is very old-fashioned and only some of it is legible.   Are there any other pages, such as the page after the cover?   The photo is upside down.

I acquired a Marine uniform and with it came a notebook he brought back. I would like to find someone that might be able to translate it. Thanks in advance. 

Hello everyone, I usually don’t post much, I mostly just follow the forum, but I’ll try to change that. This is my example of the Inter-Allied Victory Medal in the French version. A simple piece by the Paris Mint, with the cornucopia and BR marks, purchased at a street market in Spain. Could anyone provide more information about this case? Are these boxes genuinely French and authentic to the period? Regards, Marcius

Thank you for your comments 

The helmet looks fine to me, entirely in light-colored leather. The liner has an ‘eight-finger’ configuration, a leather chinstrap, and a padded shock-absorbing lining.