LOL! Of course the traditional ameriKan ways is that only the fizicly and mentally fittest were allowed into the great murder-suicide machine. Moloch demands only the best and brightest young men!
The less intelligent are, on average, naturally more likely to die in war. However, in the case of the War of Northern Aggression, a lot of the more intelligent people of the South died than did the intelligent people of the North. College professors and such fought and died for the South, whereas in the North, that class avoided battle, and often military service altogether.
Confederate General Wade Hampton -- later governor of South Carolina -- said that the War for Southern Independence was a noble struggle for liberty and self-determination that cost the South "her best blood and all her treasure."
How about that. In Jew Jersey I had a compatriot who for some reason spent a lot of time in SC. He bitterly complained about encounters with its traffic cops and would spout -- getting other yankees doing so too -- "Southerners are so dumb because their best men got killed in the Civil War." I simply didn't know enuff yet to reply "Who killed them?"
When I escaped the cold northlands I (stop me if you've heard this one) didn't know which side wore blue and which gray in the war ;)
Never heard that! TX is, or wuz, way farther from Taxachusetts than the Old Dominion ;)
Then there's the old saying that Southerners scorn blax as a race but get along withem individually and yankees are the other way around. Yankees fought a war to show their love for the darkies but won't live next door to one -- &c.