FORT LEWIS, Wa. — Mark Zuckerberg is a name I grew quite familiar with even through my year in Kandahar. Facebook was the novelty through which I interacted with most of the world back home. Though it was accessible only on our trips to the forward operating base — no connectivity on our stranded outpost in the Zhari District. Despite all that Facebook meant to me while at war, I was less than thrilled to find that Mr. Zuckerberg had been named Time Magazine’s Person of the Year. The distinguished title goes to the man or woman deemed to have...