"AFM 35-13 relates to additional payment for foreign language proficiency."
No no no! That research is flawed IMO.
Before anyone uses item #50, someone needs to go back and look at AFM 35-13 as it existed in 1972-73. If you Google "AFM 35-13," for example, you will find this site, listing "various orders" from the 6994th Security Squadron. (Go to
http://www.ec47.com/varorder.htm). The second order on that page is an award of the Basic Aircrew Member Badge, done IAW AFM 3513, para 5-9(a)(2).
This needs deeper research. Air Force pubs have changed drastically over the decades. The AFM 35-13 that was superseded in 1990 may well have been something totally different than the one in place in 1972. The "35 series" regulations used to govern military personnel matters. That series was perhaps the largest series of regs on the shelf. It covered everything from dress & appearance to officer discharge boards to awards & decs, and probably flight physicals. The subject matter is way too large and way too fluid; someone with connections needs to nail this down.