Use Mounted Units
While you should always play games the way you want, if you want to makes things easier for yourself in Fire Emblem, prioritize using mounted units. This includes cavaliers, paladins, pegasus knights, horseman, and dracoknights.
Movement is so important in Fire Emblem games and all of these mounted units have excellent movement, especially flying units that can cross mountains and water easily.
While certain terrain types will hinder horse units, it’s only a minor annoyance. Being able to get across a battlefield in just a few turns is incredibly beneficial. The maps of Shadow Dragon and the Blade of Light are quite big, but mounted units make them a cakewalk.
You’ll find yourself needing to get to certain characters, rushing to villages to save them, or swooping in to save one of your units in trouble quite often. So we recommend dumping a large portion of the EXP you get at the beginning into characters like Jagen, Cain, Abel, and Caeda.