Where Youth and Laughter Go is not the first Afghanistan memoir published, nor will it be the last. Yet this tome fills a critical gap in the existing literature by providing the voice of a battalion commander. Memoirs tend to either be written by generals defended by the bulwarks of politics and unnamed staff officers or by front-line soldiers with a powerful but narrow perspective. Marine Lieutenant Colonel Seth Folsom, a battalion commander who patrolled daily with his infantry squads, is uniquely placed to bridge this divide. At the battalion level he operated where ‘theory meets practice,’ an often thankless position with limited room to hide.