In September 2003 Halstead was assigned as Deputy Commander of the 21st Theater Support Command in Germany.
 In September 2004 she was assigned as commander, 3rd Corps Support Command (COSCOM), including deployment to Iraq for Operation Iraqi Freedom.
 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.
 As part of the Base Realignment and Closure (BRAC) initiative, this streamlining included the closing of the ordinance center in Abderdeen Proving Ground and its relocation to Fort Lee, Virginia.
 She retired from the military in June 2008.
In September 2003 Halstead was assigned as Deputy Commander of the 21st Theater Support Command in Germany.  In September 2004 she was assigned as commander, 3rd Corps Support Command (COSCOM), including deployment to Iraq for Operation Iraqi Freedom.  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.  As part of the Base Realignment and Closure (BRAC) initiative, this streamlining included the closing of the ordinance center in Abderdeen Proving Ground and its relocation to Fort Lee, Virginia.  She retired from the military in June 2008.
Rebecca S. Halstead