This was the work of the White Liberal Elite establishment You can see some of the same tendencies from the same group today....like cancel culture
Wrong List of top 20 deadliest war battles Only 3 are White people Seems like Asians are most efficient https://en.wikipedia.org/wiki/List_of_battles_by_casualties List of battles by casualties
Efficiency is a function of killings per unit of time--not just gross killings. Ancient warfare was not efficient. Hitler killed efficiently. Nuclear weapons are the most efficient.