There have been isolated cases of larger ambushes, such as an attack on a coalition convoy in Samarra on November 30, 2003 that involved 100 fighters and a massive ambush of a coalition convoy in Sadr City on April 4, 2004 by Mahdi Army militiamen numbering over 1000 men.
In the context of insurgent activities, there have been instances of larger coordinated attacks, such as the ambush of a coalition convoy in Samarra on November 30, 2003 involving around 100 fighters, and another large-scale attack on a coalition convoy in Sadr City on April 4, 2004 carried out by over 1,000 Mahdi Army militiamen.