Stolen Army Ta 50 regulation?

You can't file a claim with CIF, but you can submit a FLIPL with your unit. Assuming everything you've said here is true, then get a sworn statement from whoever was responsible for your bag detailing what happened, then put it up your COC. your BC will evaluate the circumstances and flipl the items if warranted. In-theater losses are easily flipled, so you'll probably be alright.