The 3rd Infantry Division has been celebrating its birthday this week with an array of athletic competitions.Marne Week kicked off Tuesday with the first day of the soccer tournament. According to 2nd Lt. Conrad Bundy, operations officer with the 4th Infantry Brigade Combat Team and officer in charge of the tourney, 32 teams competed.“The first day was prelims, then quarter finals,” Bundy said. “This morning we started the final playoffs.