Today is the 300th anniversary of the Deerfield Massacre–an atrocity from one of the French and Indian Wars in which 300 marauders from New France targeted a small Massachusetts village, killed dozens of its inhabitants, and hauled away more for captivity and ransom. A striking number of the murders involved women and children, including babies. It was one of the most brutal events in our national history–and it has a lot to do with why my forthcoming book on Franco-American history (co-authored with Mark Molesky) is called Our Oldest Enemy.