In southern Afghanistan, reinforcements don’t just come from the U.S. The small eastern European nation of Georgia is preparing for its third rotation of infantry battalions in Helmand province, where it has fought alongside Marines in some of the toughest terrain in Regional Command-Southwest. On Friday, Georgia’s 33rd Light Infantry Battalion held a ceremony to mark the beginning of its deployment to Afghanistan, according to photographs released by the Corps. It was attended by 3rd Battalion, 7th Marines, out of Twentynine Palms, Calif., which trained the unit for war earlier this year as part of the Georgia Deployment Program, which…