A free program for Android, by Ladik Apps Games.

Epic Battle Simulator Sandbox is a free war simulator. It offers sandbox gameplay where you can play as the leader of a country that is at war with another country. You can choose to lead your troops into battle or to shelter, and you can also deploy tanks, artillery, and other military equipment.

How to play:

Using the in-game currency, purchase different war units and deploy them to war. In order to see the entirety of the battle, you can also move the camera angle whenever you want.