The River Between Us Contrasting Regions: North and South Quotes

How we cite our quotes: (Chapter.Paragraph)

Quote #10

I wouldn't mourn Paw. He'd learned us long before how to get by without him. And all he'd left behind himself was there in Noah's hand. It was fitting that Paw had ended up fighting on the other side. He'd never been on ours. (14.54)

Many books that deal with the Civil War address the idea of "brother against brother." Here, we have father against son. How are those concepts similar and different?