Yes, it's a book about Jesus in his ever-popular warrior mode. Prince of Peace? Turn the other cheek? Screw that, he's come to set brother against brother in an all out battle for your soul! (Please pretend that the last sentence was said in a kind of monster truck rally advertisement voice, it makes it funnier. Thank you.)
Excerpted from the back cover for your pleasure:
As a believer, you interact every day with invisible spiritual powers in heavenly places. Hierarchies of angels are engaged...(yadda yadda yadda...war war war)...Derek Prince offers the guidance you need to take your place in this monumental conflict. As you build the character of a warrior, you will become more and more like Jesus Christ, your commanding officer.
Ja wohl, mein Gott, I am present and accounted for and READY FOR ACTION!
There, DocTurtle, I hope you're happy! Personally, I prefer the following covers, also from books that happen to be called Rules of Engagement.
First, the cheesy romance:
Hometown USA? Why, oh why, are they getting their purdy dresses all mussed up on the hood of a car?
Then the not so cheesy, intriguing romance:
I am intrigued by the location of that firearm. And the "Phoenix Brotherhood," whatever that is. (See, it's intriguing!)
And finally, a classic Sci-Fi:
Kirk squares off against the Klingons and their square foreheads with his square jaw and not-so-square sideburns. Intriguing!