This is creative and the ability to choose a map size and have it procedurally generated is impressive and often miss in game jams because most people are focused on the graphics, sounds, and gameplay and they overlook what happens behind the scene. Kudos on that.
Focusing on the gameplay, I already struggle in a game of chess which has a much smaller play area, and having the default map be so huge just felt overwhelming especially since it is not like an RTS where maybe I could select a group of units to move rather than painfully move a single unit at a time. That's really my recommendation, to add a way to speed up gameplay by either reducing the map size or allowing squadron or groups of units to be moved in formations at a time.