Each weapon also comes with a sub weapon and special weapon that can change the tide of battle in your favour. (gonintendo.com)
If they gather around each other on the battlefield, they'll even offer a unique and typically powerful ability that can really change the tide of the battle. (useapotion.com)
There are certain bases that you can capture that help raise moral or do other little things to help change the tide of battle a bit, but over-all, you are going to end up playing the missions the same way each time. (levelupvideogames.net)