Find key information & resources for Fort Sill in Oklahoma including contacts, important messages, directions, cost of living, and more., Fort Sill is one of the four locations for Army Basic Combat Training and has played a role in every major American conflict since 1869. Continue reading for an in-depth guide to help aid you in your transition to living and working on Fort Sill., Fort Sill is hosting an Independence Day Celebration on July 4, featuring live music, food trucks, games, and activities, including a performance by the Fort Sill Salute Battery and a salute to , Congratulations on your assignment to Fort Sill, home of the Fires Center of Excellence! Whether you’re a Soldier, civilian, or family member, we are thrilled to welcome you! Click here to download the Fort Sill Welcome Guide; your go-to resource., Fort Sill is getting a new commanding general tomorrow and will be holding a ceremony., Fort Sill is a United States Army post located in Comanche County, about 90 miles southwest of Oklahoma City and 50 miles north of Wichita Falls, Texas on Interstate 44. Fort Sill is recognized as a historic landmark and also serves as home of the Army field artillery school as well as the Marine Corps’ site for Field artillery MOS school..