The real war really is internal... will I follow what my spirit knows is The Way, or will I let my mind or body send me elsewhere to satisfy their desires? Over and over... the fight is to stay on the narrow path (which I have sometimes strayed a long way from).
Spiritual Battle indeed! Ephesians 6--we struggle NOT against flesh and blood, but PRINCIPALITIES, POWERS, and EVIL SPIRITS in high places. Those are Demons and Fallen Angels folks! It's Biblical. Jesus is the One And Only Way to Salvation! Jesus loves you!