Ball’s Bluff was a great episode about a battle involving less than 3,500 men, total. Latter in the war that would be a footnote to a campaign, possibly a skirmish. Ok a large skirmish, but you get my point. What battle with under 5,000 interest you and why are they significant?
I will start of with the Battle of Big Bethel, where General Magruder checked the Union advance in June of 1861 and it was not resumed until the Peninsula Campaign the next year.