: In Marathon 1, the manual said the Marathon had something like: 1500 Marines.
: The Player was a marine on the transport ship "Marita". But all
: the Marines on the Marathon were killed which is why they never apear in
: the games (except for multiplayer).
Do you mean to reference this tidbit?
The original crew of the Marathon consisted of 50 senior staff, 1150 officers and 24,000 civilians all of whom were citizens of the Mars colony or Earth. Some individuals were placed in stasis for the interstellar journey, but most civilians lived and worked on the ship and raised families there. As the crew aged, a new generation of humans were born and raised on the Marathon. By some, these children were looked down upon and called "Bob", short for born on board. These citizens grew to run the ship... It is your sworn duty as a security officer to protect Bob.
There were 1150 officers, people running and maintaining the ship. No mention of Marines or any other kind of combat personnel except for you, the Security Officer.