Wood shows secession is not just a "southern" thing. It also shows how divided sentiments in the Union ran.
Yes. And it also shows just how much those sentiments changed once the south initiated hostilities at Sumter. Wood himself took the lead in raising the 40th New York Volunteer Infantry, known as the 'Mozart Regiment' after his political factionm in the days following the attack.
Forgot to mention that part, huh?