The Maneuver Support Center of Excellence celebrates 20 years of existence Oct. 4 with a 4:30 p.m. retreat ceremony at MSCoE Plaza, followed by a traditional Army Twilight Tattoo by the 399th Army Band.Stood up Oct. 1, 1999, as the Maneuver Support Center --which came to be known as MANSCEN -- the organization has provided a unique way of organizing and staffing the installation to conduct training, doctrine development and force integration as the Military Police and Chemical schools joined the Engineer school here when Fort McClellan, Alabama, closed as part of the Base Realignment and Closure program.The center was re-designated the Maneuver Support Center of Excellence in 2009 to highlight Fort Leonard Wood's role in leading trainees toward their goals.Retired Lt. Gen. Robert Flowers and Retired Command Sgt. Maj. Robert Dils, the first commanding general and command sergeant major to serve under the MANSCEN umbrella, are scheduled to attend.The entire installation, to include families, are welcome and encouraged to come out and enjoy the ceremony and tattoo. Everyone is reminded to bring lawn chairs.