AFAIK the Herc was only introduced in the Great War.
I'm wondering how much the GTA needed interceptors, etc, of course. The tech descriptions make it sound like the Orion was The Daddy for quite a long period before the Typhon came along, and that would perhaps entail they didn't have a necessity for too many fighter types beyond a generic space-sup type Apollo, and the Angel for scouting. Particularly as, offhand, the Vasudans best bombers are quite slow in the TV War. Of course, I guess the Angel could be used in an interceptor type role (perhaps because the Valkyrie or some other interceptor project was way behind schedule?), given that the Loki was designed as a sort of scout but was a front-line fighter for the NTF rebellion.