CEMO= Carrying Equipment, Marching Order in this case is Fighting Order plus large Pack
CEFO= Carrying Equipment, Fighting Order. more populary know as Skelly(Skeleton) Webbing. consisting of, belt,yoke,ammo pouch x 2, kidney pouches, carrier canteen, poncho roll. and resp bag.
This obviously refers in this case to 58 Pattern Webbing. The attached shows it as C =Complete, where in fact C = Carrying.
Bazz.
58 webbing.pdf