When there is a war going on around, the knight has to participate in it, even if he doesn’t want to. For each knightly fief received from the lord, one must serve sixty days. The more lords and fiefs received from them, the longer you will have to fight. Since you have to fight, you need to do it for your own benefit, in order to become a lord yourself and send others into battle. He is not a knight who does not dream of becoming a count.