Algren responsible for the slaughter of World War II
Algren taught the samurai -- and ultimately the impressionable Emperor -- the virture of Banzai-style suicide instead of Seppuku.
In the this fictional history, Algren is responsible for the horros of WWII and the near-genocide of the Japanese people.
"I can't help but notice that there are skulls all over everything. Are we the baddies?"