Mike Resnick 
Starship: Mutiny 

The starship Theodore Roosevelt is fighting on the far outskirts of a galactic war, its crew made up of retreads and raw recruits. A new first officer reports, Wilson Cole, a man with a reputation for exceeding his orders (but getting results). Hes been banished to the Teddy R. for his actions, but once there he again ignores his orders. … This is the first of five novels about the starship Theodore Roosevelt. The next four will be, in order, Pirate, Mercenary, Rebel, and Flagship.