Gen. David Petraeus

March 20 – April 9, 2003 · 4,000 total casualties

The speed of Baghdad's fall seemed to validate Defense Secretary Rumsfeld's 'transformation' theory — that a smaller, faster military could defeat conventional armies cheaply. The iconic statue pull-down provided a powerful visual of liberation — though the watching crowd was small and the toppling partly staged. What the cameras didn't show was the looting of Baghdad's museums, hospitals, and ministries that began immediately, while US forces watched under orders not to intervene — Rumsfeld's dismissal: 'Stuff happens.'

2006 – March 2007 · 2,500 total casualties

Ramadi's transformation — from a city US commanders privately conceded was lost to AQI control, to the birthplace of the Sunni Awakening — was the strategic turning point of the Iraq War. MacFarland's approach predated and directly informed Petraeus's surge strategy. The partnering with Sunni tribes to fight AQI — the 'Anbar Awakening' — reversed years of alienation created by heavy-handed operations and de-Baathification. Sattar Abu Risha was assassinated by AQI in September 2007, ten days after meeting with President Bush, but the Awakening he helped create had already fundamentally altered the war's trajectory.

March 23 – May 12, 2008 · 1,500 total casualties

Sadr City was a vivid illustration of the surge's limits: the US could suppress militia violence and build walls, but it could not resolve the political contest between Maliki's government and Sadr's movement that underlay the fighting. The concrete wall — running for miles through an urban neighborhood — recalled the Israeli West Bank barrier and became a symbol of the physical division of Baghdad by sect and power. Sadr's decision to stand down preserved his militia for future use; it remained a dominant force in Iraqi politics for years.

March 25 – April 20, 2008 · 1,000 total casualties

Basra was a turning point — the first major operation planned and led by Iraqi forces with US support rather than the other way around. Its mixed success (military improvement but political resolution via ceasefire) encapsulated the surge's central paradox: better security was creating space for political reconciliation that wasn't actually happening. Maliki's willingness to confront Shia militias strengthened US confidence in his government — until his sectarian governance ultimately recreated the conditions for ISIS.