Manpower (MP) stands for the number of people working for a player's space industry. The MP is the restricting resource for fleet building. Every player has a fixed amount of mp (a number around 5000). Manpower is needed to man your ships. Every ship needs a specific amount of MP.
MP can be made accessible again, if ships are recycle or lost in battles. If ships are lost in battle, new people are recruited automatically on your homeplanet, so the manpower is free once more. The highest amount of MP ever recorded can be viewed in the high-score.
if you loose ships in y battle, the amount on MP is essential to winning or loosing a battle. the player, that lost more MP in the battle will loose the battle and the difference will be plus or minus score