army dreamers

Rowan Balston, a warrior candidate with a promising set of skills, whose only problem is he questions more things than his supervisors would like to, won a one-way ticket to paradise by digging too deep into his family's history with titan experiments.
The piece of paper they gave him when they put him on a boat, only had one sentence written on it, over and over again:
"Kill the remaining Ackermans on Paradis Island and return home."