In a final tactical road march, the last U.S. troops in Iraq crossed the border into Kuwait Sunday morning, ending almost nine years of a deadly and divisive war.
The war by the numbers:
Nearly 4,500 US troops killed
Over 32,000 troops injured
Over 100,000 Iraqi civilians killed
166,000 troops were deployed at the peak of the surge
The war lasted 3196 days
The war has cost $806 billion