Yes it's about oil and we all know it.

Pentagon taps 92,000 troops for one-year tours in Iraq in 2006.
America now has about 138,000 troops in Iraq. Down from 160,000. Only 53,000 are active duty Army troops and 25,000 are National guardsman. Not included in this call up are 5000 Marines, 3700 sailors and more than 3300 airmen who are also sceduled to deploy next year..