 The 2009 rotation was the first rotation with concurrent training for the duration of the rotation in both countries from the first week of August to the end of October.In Romania, the rotation included approximately 1,600 personnel including U.S., Romanian military and civilian support and the rotational units.Approximately 180 soldiers were from the Tennessee Army National Guard’s 176th Combat Sustainment Support Battalion headquartered in Johnson City, Tenn.; nearly 450 soldiers were from the 4th Squadron, 2nd Stryker Cavalry Regiment from Vilseck, Germany.