They left Iraq in a Russian convoy right before the war started. If you do a search you might even find some of the many freerepublic threads that were following that convoy as it was leaving Iraq.
In fact I vividly remember it was exactly 11 Russian trucks in a convoy watched on satellite provided video. You won't find this anywhere on the web because it was scrubbed. Bush decided to take the "hit" for "making the mistake" that there were no WMD in Iraq so Russia wouldn't be implicated and end up causing the 3rd and final thermo-nuclear world war.