Of all the jarring things I've witnessed on the National Mall, nothing will beat the image of the first thing I saw after I cleared security at the Army festival: a child, sitting at the controls of an M119A3 Howitzer, being instructed by a soldier on how to aim it, as his red-hatted parents took a photo with the Washington Monument in the background.

The primary stated reason for the Grand Military Parade is to celebrate the US Army's 250th birthday. The second stated reason is to use the event for recruiting purposes. Like other military branches, the Army has struggled to meet its enlistment quotas for over the past decade. And according to very defensive Army spokespeople trying to convince skeptics that the parade was not for Donald Trump's birthday, there had always been a festival planned on the National Mall that day, and it had been in the works for over two years, and the parade, tacked on just two months ago, was purely incidental. Assuming that their statement was true, I wasn't quite sure if they had anticipated so many people in blatant MAGA swag in attendance - or how eager they were to bring their children and hand them assault rifles.

There had been kid-frien …

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