![](https://lemmy.world/pictrs/image/c777365e-aa63-41c0-a07e-26073f6fc23f.png)
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It depends
Not all weapons have a burst mode. Often though, militaries prefer controlled bursts of full auto, but it depends on the role and weapons system. Machine gunners are more likely to go full hog than a rifleman for example, but that’s assuming that all soldiers do the most optimal choice in any given situation, which just isn’t true.
A quick search gives 7% for the proportion of religious wars of all wars, which makes the claim that religious wars killed the most people unlikely.
I hate religion as much as the next guy, but you don’t have to make shit up.