Let's try this again prologue-second draft

In early childhood children who enlist in the UC make a decision between being one of the three classes which will define themselves in battle. First there are the bulky tank like heavily trained commandos who's skills on the battlefield are unmatched, next there are the operatives who's intelligence and speed is unmatched by any, and finally their are the engineers who can repair anyone or anything. These soldiers live on the flagship of the UC fleet refered to as UCS Blackbolt who has just been completed, and so the story of the brave crew begins.