Fort Hood, Texas ? President Bush on Tuesday marked the second anniversary of Baghdad’s fall by thanking soldiers who played a major role in toppling Saddam Hussein and telling them their work in Iraq is far from over.

Bush delivered a pep talk in which he effusively thanked a sea of olive green- and khaki-clad of soldiers at Fort Hood — the Army’s largest active-duty armored post — for helping coalition forces race across more than 350 miles of Iraqi desert to reach Baghdad within 21 days.

“The toppling of Saddam Hussein’s statue in Baghdad will be recorded alongside the fall of the Berlin Wall as one of the great moments of liberty,” Bush told an estimated 25,000 soldiers. “And eight months later, soldiers of the Ivy Division brought the real Saddam Hussein to justice.”

Saddam is gone from power and faces trial, but the U.S. military mission in Iraq isn’t finished, the president said. Coalition forces are in a new phase of the campaign: protecting Iraq from an aggressive insurgency, giving time for Iraqi security forces to get their footing and giving the country’s fledgling government a chance to take shape.

The work of American forces in Iraq is crucial to ensuring that democracy succeeds there and spreads throughout the Middle East, Bush said.

Fort Hood, the home of the 4th Infantry and 1st Cavalry divisions, has been involved in the brunt of the action in Iraq. More than half the base’s personnel have been to Iraq. The 4th Infantry led the capture of Saddam. Soldiers from the fort occupied territory north of Tikrit, Saddam’s hometown, and have seen some of the fiercest fighting of the war. About 146 soldiers from Fort Hood have died in Iraq, a base spokesman said.

President Bush is cheered by flag-waving soldiers at Fort Hood, Texas, the largest active-duty armored post in the military and an Army base that has contributed thousands of troops to the war in Iraq, Tuesday.

The president offered no timetable as to when U.S. service members will leave Iraq permanently other than to say it will be when their objectives are completed.

“And then our troops will come home with the honor they have earned,” he said.