The / means "of" so 2 of 4 etc., and not the percentage, but next time I load up the game I'll get exact troop numbers in the units for you. I'll update my SOT post often enough to let you know exactly what's going on, and if I feel a pressing need to have something retrained etc. I'll mention it in my turn report and my SOT post. And if you have any questions about my army's status you can always just ask me.