President Obama paid tribute Monday to the men and women who have died defending America, pointing to Vietnam veterans as an underappreciated and sometimes maligned group of war heroes who remained true to their nation despite an unwelcome homecoming.
"You were sometimes blamed for the misdeeds of a few," Obama said at the Vietnam Veterans Memorial. "You came home and were sometimes denigrated when you should have been celebrated. It was a national shame, a disgrace that should have never happened.
"Even though some Americans turned their backs on you, you never turned your back on America."
Marking Memorial Day at both the black granite wall honoring more than 58,000 soldiers who died in the Vietnam War and earlier at Arlington National Cemetery across the Potomac River from the capital, Obama noted that for the first time in nine years, "Americans are not fighting and dying in Iraq," and the nation was winding down its role in the war in Afghanistan.
"After a decade under the dark cloud of war, we can see the light of the new day on the horizon," Obama said to an audience gathered at the Arlington amphitheater lined with American flags under a warm, brilliant sun.
In this election year, Obama said the nation must remain committed to providing for the families of fallen soldiers and help returning service members seeking a job, higher education or health care benefits.
Obama said sending troops into harm's way was "the most wrenching decision that I have to make. And I can promise you I will never do so unless it's absolutely necessary."
As he seeks re-election, Obama has reminded audiences about the end of the war in Iraq and the move to bring all troops home from Afghanistan by 2014. And in a campaign ad released last week, he credits U.S. commandos who helped in the raid that killed Osama bin Laden.
Republican presidential candidate Mitt Romney, meantime, promised to maintain an American military "with no comparable power anywhere in the world."
The presumptive Republican presidential nominee appeared with Sen. John McCain of Arizona, the GOP's 2008 presidential candidate, before a crowd in San Diego estimated at 5,000.
Romney drew clear contrasts with Obama. The former Massachusetts governor warned against shrinking America's military in Europe's image and said the nation must have the world's strongest military to win wars and prevent them.
"We have two courses we can follow: One is to follow in the pathway of Europe, to shrink our military smaller and smaller to pay for our social needs," Romney said outside the city's Veterans Memorial Center & Museum. "The other is to commit to preserve America as the strongest military in the world, second to none, with no comparable power anywhere in the world."
Veterans could play a significant role in the 2012 election. Exit polls in 2008 showed that Obama was supported by about 44 percent of voters who said they served in the military, while 54 percent voted for McCain, a former Navy pilot who was a prisoner of war for more than five years during the Vietnam War.
A poll released Monday by Gallup found that 58 percent of veterans support Romney, and 34 percent back Obama. The results were based on a sample of 3,327 veterans who are registered voters and had a margin of error of plus or minus 2 percentage points.
Several closely watched states in the election have large blocs of military voters. Florida, home to several military installations, has more than 1.6 million veterans, according to the Veterans Administration. Pennsylvania has nearly 1 million veterans, while Virginia and North Carolina each has about 800,000 veterans living there.