Who has had the hardest and most detailed questioned answered here on AskHistorians because AskHistorians really seems like AskReddit for the pros. Wow some really deep questions here.

by lucius_pixel

Just wow. This is like Ask Reddit for the people that really want to know.

Polybios

You may be interested in this 6-post/8000-word answer on armoured trains:

What is the point of Armored Trains?