A Military/History board would be as popular as many current lower traffic TD.com boards within weeks - of that I am fairly confident. Heck, I'll make it happen.
A "Military/History" Board will become Political Talk Part II. 50 % of the topics will involve the Civil War, ranging from battles to the "absolute fact" that the institution of slavery had absolutely nothing to do with the war.
The other 50% will be revisionist history, disputing what "hippie liberal history professors" have been writing and teaching for the last 100 years.
People who offer a thought or opinion with sufficient evidence will be called idiots and have their evidence dismissed, because Rush or Alex Jones said so.