OK cap is 10 or less on land and 25 in space. No problem with land ! Usually your best unit is first and u bring more unit at start of the engagment... if u have more than 10 u can choose wath u need. In space if u are on defense with for exemple 6 calamari, 8 corvette, 4 nebulon, 4 frigate 10 xwing, 8 ywing.... the computer don t let u choose what u will start with !!!!! i have try to put my best 25 cap mix in fleet number 1 and rest in fleet 2 and 3 but the computer choose for me what i bring and sometime it s not great !!! In one battle he choose to make me bring 2 space officer !!! it s seem to be random with a little bit of everything ! when u go at offensive it s the same thing !!!! u cannot build ur army !!!! u have to suicide some units to get others !!! For now i just use Fleet with the exact cap. I never go with more than 25 on a same attack or planet defense. Any idea ???