(Gazette Photo by John Ruch) Mayor Thomas Menino (right) observes the color guard during the rededication of the 140-year-old Civil War Soldier’s Monument on Sept. 17 in Monument Square. Hosted by the City and the Jamaica Pond Association, the ceremony included laying a rose inside the monument for each of the 23 local troops whose names are inscribed there. The empty chair symbolizes soliders who never came home.