School, Fort Sill, OK, 2011. External links Field Artillery museum Global Security's Fort Sill page Fort Sill Relocation Information and Fort Sill Q&A Encyclopedia of Oklahoma History and Culture – Fort Sill Oklahoma Digital Maps: Digital Collections of Oklahoma and Indian Territory Sill Training installations of the United States Army Sill National Historic Landmarks in Oklahoma Buildings and structures in Comanche County, Oklahoma Native American history of Oklahoma United States Army Corrections Command Pre-statehood history of Oklahoma Boot Hill cemeteries Historic American Buildings Survey in Oklahoma Sill 1869 establishments in Indian Territory National Register of Historic Places in Comanche County, Oklahoma Military installations established in 1869