As their convoy reached the barbed wire at the border crossing out of Iraq, the soldiers whooped and cheered. Then they scrambled out of their stifling hot armoured vehicles, unfurled an American flag and posed for group photos.
For these troops of the 4th Stryker Brigade, 2nd Infantry Division, it was a moment of relief fraught with symbolism. Seven years and five months after the US-led invasion, the last American combat brigade was leaving Iraq, well ahead of President Barack Obama's Aug 31 deadline for ending US combat operations there.
The 4th Stryker Brigade, 2nd Infantry Division was officially designated the last combat brigade to leave Iraq under Obama's plan to end combat operations in Iraq by Aug 31.
When 18-year-old Spc Luke Dill first rolled into Iraq as part of the US invasion, his Humvee was so vulnerable to bombs that the troops lined its floor with flak jackets.
Now 25 and a staff sergeant after two tours of duty, he rode out of Iraq this week in a Stryker, an eight-wheeled behemoth encrusted with armour and add-ons to ward off grenades and other projectiles.
"It's something I'm going to be proud of for the rest of my life -- the fact that I came in on the initial push and now I'm leaving with the last of the combat units," he said.
He remembered three straight days of mortar attacks outside the city of Najaf in 2003, so noisy that after the firing ended, the silence kept him awake at nights. He recalled the night skies over the northern city of Mosul being lit up by tracer bullets from almost every direction.
Now, waiting for him back in Olympia, Wash, is the "Big Boy" Harley-Davidson he purchased from one of the motorcycle company's dealerships at US bases in Iraq -- a vivid illustration of how embedded the American presence has become since the invasion of March 20, 2003.
That presence is far from over. Scatterings of combat troops still await departure, and some 50,000 will stay another year in what is designated as a noncombat role. They will carry weapons to defend themselves and accompany Iraqi troops on missions (but only if asked).
Special forces will continue to help Iraqis hunt for terrorists.
So the US death toll -- at least 4,415 by Pentagon count as of yesterday -- may not yet be final.
The Stryker brigade, based in Joint Base Lewis-McChord in Washington state and named for the vehicle that delivers troops into and out of battle, has lost 34 troops in Iraq. It was at the forefront of many of the fiercest battles, including operations in eastern Baghdad and Diyala province, an epicenter of the insurgency, during "the surge" of 2007.