That would suck to get zombie guts splattered in your face when your blowin' 'em away
For the same reason you might love your teeth but you still brush them.
What does buildings/churches have to do with God loving man?
Because Christians are subject to the laws of nature God created, just like everyone else. You may be shocked to hear this but Christians are even subject to the Law of Gravity, and if they fall out a window they fall to the ground just as a pagan would!
probably, the military has regulations for everything; ask at the base commander's office
God hates churches and trailer-parks.