Activision's first-person-shooter franchise returned to its roots Nov. 3 with the newest title in its marquee series, Call of Duty: WWII. And as happened with the launch of the first dozen or so COD installments since 2003, this first-person shooter will have a real impact on the U.S. military: In barracks and rec rooms on bases across the globe, internet speeds will grind to a (slower) crawl as squad after squad of junior troops log onto crummy wifi, locked and loaded with M1 Garands and Thompsons, to hit the beaches of Normandy in high def.