"A lot less than the number killed for the sake of property, for sure."
As churches (as distinct from religions) tend to dedicate themselves to maintaining the status quo, it is virtually impossible to separate them - typical example, the Crusades, ostensibly about Christianising the East but in fact all about opening Eastern Trades routes and spices.
The various Empires were gained in the name of civilising the 'heathens' - political and economic power, impure and simple.
Scratch any 'religious' war and you'll find a political or economic agenda not far below the surface.
None of this has anything to do with true religion of course - just a flag to march under
Jim Carroll