Philadelphia Is Looking for a Few Good Gentlemen Deployments Thin Ranks of Unit That Has Lured Blue Bloods Since 1774 By Michael M. Phillips Updated Oct. 15, 2014 6:31 p.m. ET PHILADELPHIA— Gregg Connell ’s enlistment into his National Guard cavalry unit went like this: Already well-lubricated at the armory bar, members of the troop passed around a wooden box. Those who wanted to accept Spc. Connell dropped in white marbles. Those opposed, black marbles. White marbles outn