[Strider]

It's been a while since I've played. Basicly, the campaign(s) are the individual battles linked together with a story or 'situation'. Sometimes (or always?) you have an option after each battle as to what 'area' you want to go to next. You can capture ships and use them for your own, repair ships, and move crews/marines from ship to ship. You can 'sell' unwanted ships, or turn some into fireships.

I assume you did, but still I'll ask, if you've looked at both the download file directory and the directory where the game was installed for the manual ?