Slaves And Warships

Most of the movies that show Romans fighting battles made us believe that Romans took their slaves to warships. They had a valid reason behind not using slaves as rowers and soldiers. Chances of a slave giving up while war is more, on another hand, citizen have some responsibilities towards their nation and they will fight with devotion. Also, if a slave wishes to go to the war, then his master has to free him. According to Romans, the mere hope of returning from the war and living a free life motivated slaves to be dedicated soldiers. Deep logic we must say!