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BATTLE // April 4, 2004

First Battle of Fallujah

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Overview

The First Battle of Fallujah, code-named Operation Vigilant Resolve, was an American-led operation of the Iraq War against militants in Fallujah as well as an attempt to apprehend or kill the perpetrators of the killing of four U.S. contractors in March 2004.

Overview adapted from Wikipedia, licensed under CC BY-SA 4.0.

Significance

The First Battle of Fallujah, conducted under Operation Vigilant Resolve, was launched in direct response to the killing of four U.S. contractors in March 2004. The operation aimed both to suppress militants entrenched in the city and to apprehend or kill those responsible for the contractor killings. U.S. forces under commanders including Conway, Mattis, and Toolan committed approximately 10,000 troops against an estimated 6,000 fighters affiliated with Jama'at al-Tawhid wal-Jihad, the organization led by Abu Musab al-Zarqawi. The battle marked an early direct confrontation between U.S. forces and organized insurgent networks in Iraq's Sunni heartland, and the presence of senior Zarqawi-linked commanders on the opposing side underscored Fallujah's role as a hub of organized resistance during the occupation period.

Forces & casualties

Troop strength

  • United States10,000
    medium
  • Jama'at al-Tawhid wal-Jihad6,000
    medium

United States fielded a 1.7 : 1 numerical advantage

Casualties

  • Armée islamique en Irak184–228
    medium

Commanders (6)

Jama'at al-Tawhid wal-Jihad

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6 sibling battles · 16 factions

Last verified June 2026
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