Most all of these are JRTC OPFOR-only badges. A few are from the original NTC OPFOR era. 

That is indeed the internetsite with the image/information I was referring to

Hello,  I just started collecting USAF patches, and my knowledge is very limited. Now I have a chance to acquire the attached TPS Instructor patch though somebody my friend knows. I understand that it is very hard to get, even with my little knowledge. The problem is I couldn't tell whether this is real or fake or reproduction since I have never seen a real one, and a bit different design from what I see on the internet. I need help from experienced fellows in the forum. And I would like to know also what the market value is if it is real, and what era this patch was worn by servicemen. Thank you  

Update based on feedback so far. Dropped to 3 tiers. Less complex.  Tier 1: Validated A. Government, manufacturer, or other archival documentation from period of issue directly tracking weapon disposition by exact SN.  Normally obtained through research but may sometimes accompany a weapon from the original owner or seller (requires authentication) . Also includes period engraving or unit markings when verified as legitimate  by a recognized expert (other than the seller).  Item may or may not be in original condition; value accordingly based on normal retail of a similar weapon + history (famous person, unit, ship, or location adds higher interest regardless of originality).  Tier 2: Attributed Acquisition directly from veteran, immediate family, or estate accompanied by other personal documentation and supporting evidence including period photos, service records, etc. that align with specific item attributes and claims. Item should be period correct (otherwise there will always be a possibility that it was acquired later or confused with a similar item).  Tier 3: Plausible Linkage. Weapon with a second or third hand story and enough detail (including things like a named accessory) to track the item to the original veteran or seller enabling further “Tier 2” type research. This is the “buy the item not the story” level that equates to a “maybe”. Post-war modifications like refinish or other customization generally drop interest and resale value without Tier 1 level verification. Buyer beware; no premium.

Reviving this thread to add another variation I picked up as the combat patch on a UCP ACU at a thrift store.

I'd have to find it to check, but I've got a Cargo Handling Battalion fatigue shirt where the patch is right shoulder.   Thanks for the pics River Rat!

Posted the rest here https://www.worldmilitariaforum.com/forums/index.php?/topic/323882-soviet-and-moldova-shoulder-boards-and-patch-identification/ If anyone can help that would be great. 

To be specific I’m talking about the army air corps cadet slate grey uniform and the items worn with it. If anyone has the regs for it I would greatly appreciate it

Not sure if this string is active but I have a yellow/green version of the hat but cannot find the drawing number stamp on the yellow brim area. Since I can't locate that can I say for sure that this was a WWIi production hat? And, unfortunately my hat does hot have the adjustable band - how much does this affect the value? Thanks.

old thread on possible use of surplus vests in WWII, from forums   "Saw this photo in a recent gun book of the invasion of Okinawa April 1st 1945 of a Marine with his model 12 trench shot gun & WWI / USMC grenade vest used as a shotgun shell vest which the topic was addressed here before but questioned very neat"