Preparing for battle is an important part of warfare. It involves arming oneself, girding the body with armor, enarming oneself with weapons, equipping oneself with necessary supplies, taking up arms, and taking measures to protect oneself. ARM (3 letters), GIRD (4 letters), ENARM (5 letters), EQUIP (5 letters), TAKEUPARMS (10 letters), and MEASURESWORDS (13 letters) are all crossword solutions that refer to the process of preparing for battle.