I've been reading the Heavy Gear 3rd Edition Earth Companion. They talk about the NEC's 7th Fleet disappearing while on mission to occupy New Jerusalem. In the Earth Companion there is no indicator what happened to the fleet. Is this revealed and if so what happened? Also what book(s) is that discussed?
I don't have access to my Heavy Gear library but I believe there is mention of sparse radio chatter and battle mentioned in either the Atlantis or Utopia source books from 2nd edition.