Question: United States Army post, Fort Elliott, was named for a casualty of the Battle of Washita River, which occurred on what day?
Sentence (from "Fort Bliss"): Fort Bliss provides the largest contiguous tract (1500 sqmi ) of restricted airspace in the Continental United States, used for missile and artillery training and testing, and at 992,000 acres boasts the largest maneuver area (ahead of the National Training Center, which has 642,000 acres).
Relevant evidence: No