Direct proof of use
The B-2 Spirit is directly documented in the 2003 Iraq War through U.S. Air Force reporting on Operation Iraqi Freedom. The Air Force B-2 fact sheet states that B-2s completed their first combat deployment in support of Operation Iraqi Freedom, flying 22 sorties from a forward operating location and 27 from Whiteman Air Force Base while releasing more than 1.5 million pounds of munitions.
Whiteman Air Force Base's tenth-anniversary account places B-2s in the opening salvos of the war, stating that aircraft operating from Whiteman and forward locations dropped dozens of bombs on high-value targets in Baghdad on March 20, 2003. A March 22, 2003 Air Force news report on the start of the main air campaign also listed B-2A Spirits among the aircraft flying strike missions.
Sources: Air Force B-2 Fact Sheet, Whiteman B-2 Combat Anniversaries, Air Force Shock Air Forces
Timeline
Operation Iraqi Freedom began in March 2003. Whiteman's account identifies March 20, 2003 as the date B-2s joined opening attacks against high-value targets in Baghdad, while Air Force reporting says the broader air campaign began on March 21 local time with nearly 1,000 coalition strike sorties and B-2A Spirits among the strike aircraft.
The early B-2 effort combined continental U.S. sorties from Whiteman with forward-based sorties. The Lexington Institute/IRIS study says six B-2s attacked on the first night of Operation Iraqi Freedom, three from Missouri and three from Diego Garcia, and describes later missions against Iraqi air defense and other targets.
Sources: Whiteman B-2 Combat Anniversaries, Air Force Shock Air Forces, B-2 Stealth Bomber at War
Operational role
The documented user was the U.S. Air Force, centered on the Whiteman-based B-2 force. Public sources describe the B-2's Iraq role as long-range precision strike rather than transfer, possession, or use by another side in the conflict.
The B-2 was used against strategic and operational targets in the opening phase of the air campaign. The Lexington Institute/IRIS study says Air Force planners tasked the B-2 to hit air defenses and airfields simultaneously, and one mission commander described the aircraft's job as opening defenses for follow-on forces. The same study identifies first-night Whiteman aircraft carrying 2,000-pound precision-guided weapons and 5,000-pound bunker-buster bombs against command-and-control centers, airfields, and palaces.
Across the first ten days, the same study reports 22 B-2 sorties from Diego Garcia and 27 from Whiteman, with B-2s striking 600 targets. The Air Force fact sheet supports the broader sortie split and munitions total, while Whiteman's anniversary account characterizes Operation Iraqi Freedom as the highest-intensity B-2 bombardment to that point.
Sources: B-2 Stealth Bomber at War, Air Force B-2 Fact Sheet, Whiteman B-2 Combat Anniversaries