Earlier quoted context omitted.
Probably ASD, and military was great, but only in training and deployment to an actual war zone. Garrison was hell, all politics. Tried stripping too. War and stripping are similar: de-personalizing, over-stimulating, immediate flow state rush. Normal social anxieties go away, the rules no longer apply.
I have seen studies that suggest the best war time soldiers are probably ASD or ADHD. Unsurprisingly, great war time soldiers often suck during peace time. If you read a little history, this has long been true. I read a history piece that suggested that we only had one Civil War in the US because the General that accepted Lee's surrender at Appomattox was a chronic alcoholic and ne'er-do-well who learned compassion b…
Grant was an alcoholic and his presidency was riddled with corruption and his reputation was damaged by the Lost Cause revisionists after his death, but compared to the other historical figures we regularly call 'great' he is a better person that most of them and I wouldn't think of him as a monster, he was an interesting and complicated chartacter.
Source: https://www.amazon.com/Grant-Ron-Chernow/dp/159420487X