For nearly unlimited soldiers, perform the following actions.
1.Start a war.
2.Choose your officers normally, but create 2 or more units.
3.Go to the next screen by pressing the A button in "Enter".
4.Put 1 soldier in each unit, and all the others in one unit.
6.The game will ask, "Are you ready to start battle?" Choose NO.
7.You will back to the unit-creating screen.
8.Dismiss the unit that you choice in step 4 and re-create it.
Now you have 2 times more soldiers Do this as many times you want