 In January 2005, she was promoted to Brigadier General, the first female graduate of West Point to attain general officer rank.In 2006 Halstead was assigned as the Army's Chief of Ordnance and commander, U.S. Army Ordnance Center and Schools at Aberdeen Proving Ground, Maryland.During her tenure, she took part in the planning for the Army's effort to streamline its Ordnance, Transportation and Supply career fields by creating a single Combined Logistics branch.