But the same square footage can support 10 unhealthy less well nourished agriculturalists for every 1 robust hunter gatherer.
So when it comes to war, the trend of history has been for those 10 agriculturalists to beat the tar out of and replace that 1 hunter gatherer.
As Teddy Roosevelt pointed out ‘it is ridiculous to assume that the North American continent would remain the last great refuge on earth of a hunter gatherer (and horticulturalist) society’.
This has been noticed in lion / hyena fights over kills, too. The mob of critters with the most total muscle mass wins; 10 “sickly” aggies will have a lot more muscle mass than that one healthy hunter-gatherer.