10 years and counting: America's longest-running war

The War on Terror began on Oct. 7, 2001. / The U.S. Army (Flickr)

A decade of war will pass quietly at the White House Friday.

President Barack Obama plans no public events to mark a moment the nation never really expected: 10 years of war in Afghanistan.

A decade is longer than the time ground troops were in Vietnam and longer than the Revolutionary War, which both lasted eight. The invasion of Afghanistan was launched about four weeks after the 9/11 attacks. It introduced the nation to a new enemy, the Taliban, and a seemingly endless mission, the global war on terror.

CNN reported Marine Corps Maj. Gen. John Toolan Jr., commanding general of ISAF troops in southern Afghanistan, as saying that many deployed members of the military felt a greater significance with the 10th anniversary of the Sept. 11 terror attacks.

"I think that to us it was a far more significant date than 10 years of fighting in Afghanistan because, really, when you look at the 10 years, you're looking at different levels of forces, different levels of attention given to Afghanistan," Toolan said.

On Thursday, hundreds of people marched peacefully through the streets of the Afghan capital, Kabul, demanding the immediate withdrawal of international military forces.

The Associated Press contributed to this report.

WATCH - Rep. George Miller, congressman from California, delivered these remarks about the 10th anniversary of the war in Afghanistan earlier this week: