KHABARI CROSSING, Kuwait -- As their convoy reached the barbed wire at the border crossing out of Iraq on Wednesday, the soldiers whooped and cheered. Then they scrambled out of their stifling hot armored 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 U.S.-led invasion, the last American combat brigade was leaving Iraq, well ahead of President Barack Obama's Aug. 31 deadline for ending U.S. combat operations there.
The 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 U.S. death toll -- at least 4,415 by Pentagon count as of Wednesday -- 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. It evacuated troops at the battle of Tarmiyah, an outpost where 28 out of 34 soldiers were wounded holding off insurgents.
Before the Aug. 31 deadline, about half the brigade's 4,000 soldiers flew out like most of the others leaving Iraq, but its leadership volunteered to have the remainder depart overland. That decision allowed the unit to keep 360 Strykers in the country for an extra three weeks.
U.S. commanders said it was the brigade's idea, not an order from on high. The intent was to keep additional firepower handy through the ''period of angst'' that followed Iraq's inconclusive March 7 election, said brigade chief, Col. John Norris.
It took months of preparation to move the troops and armor across more than 300 miles of desert highway through potentially hostile territory.
The Strykers left the Baghdad area in separate convoys over a four-day period, traveling at night because the U.S.-Iraq security pact -- and security worries -- limit troop movements by day.
Chief Warrant Officer 3 Gus McKinney, a brigade intelligence officer, acknowledged that moving the convoys overland put soldiers at risk, but said the danger was less than in past.
The biggest threat was roadside bombs planted by Shiite extremist groups who have a strong foothold in the south, McKinney said.
But except for camels straying into the road, and breakdowns that required some vehicles to be towed, there were no incidents.