Fort Sill (redirected fromFort Sill, OK) FortSill,U.S.militaryreservation,Comancheco.,SWOkla.,4 mi(6.4km)N ofLawton;est.1869byGen.PhilipSheridan.A95,000-acre(38,445-hectare)fieldartilleryandmissilebase,it isthehomeoftheU.S.ArmyArtilleryandMissileCenter.FortSillwasnamedinmemoryofJoshuaW.Sill,...