Leaflets recently plastered on walls in the western city of Fallujah said another insurgent group, the 1920 Revolution Brigades, may or may not have joined the front as well.

One element of Task Force Regular entered Buhriz which was under the control of the 1920 Revolution Brigades.

Hamas in Iraq broke off from the 1920 Revolution Brigade on March 18, 2007.

The 1920 Revolution Brigades replied that: "We say to .

American officials are also negotiating with elements of the 1920 Revolution Brigades, a leading insurgent group in Anbar, to join their fight against Al Qaeda.

So it might have come as a surprise to some when a well-known Sunni insurgent group, the 20th Revolution Brigades, issued a statement this week supporting Hezbollah.

The 1920 Revolution Brigades describes its aim as to establish a liberated and independent Iraqi state on an Islamic basis.

On March, 2007 some of its members broke off from the 1920 Revolution Brigades to form Hamas of Iraq.

In October 2007, The Guardian reported that the 1920 Revolution Brigades would not join an alliance of six other Iraqi insurgent groups.

The spokesman also denied an Economist report that the 1920 Revolution Brigades was working with Americans, and insisted the group was still attacking Americans.