A governmental entity, including a municipality is prohibited from relocating, removing,altering, renaming, rededicating or otherwise disturbing a statute, monument, memorial, nameplate, or plaque on public property erected for, or named or dedicated in honor of a U.S. military engagement, figure, event, organization or unit. Exception may be granted by the Tennessee historical commission. An exception to this prohibition may be granted by the Tennessee historical commission. T.C.A. § 4-4-412.