Use the down arrow to go to the battle menu, and press left or right to open the stat menus for each character. Once you're ready, press space to calculate all the stats and begin. If you want to continue, then press the up arrow. It will resume the previous battle. Press 0 for a random battle.
It's good to be back! Hopefully I can be active again. To anyone wondering, I may not do much Warriors stuff anymore. I really just lost interest last year after book 2 of Power of Three. I may start reading them again, though. I spent many many hours on this and was it worth it? Yes. I drew everything myself, and based the p1 animation off Roy's animations with the Binding Blade in Fire Emblem: The Binding Blade. NOTE: Weapons only appear as their sword variant. Switching weapon type means that you can have an axe user fighting with a sword, and I am not extending the list. Just imagine they are the same weapon for that weapon type(except for the Binding Blade and those weapons of course)