In Pictures: US military muscle
In Pictures: The F-22 raptor aircraft
In Pictures: Air Force One: America's wings
In Pictures: Winning hearts and minds in Afghanistan
In Pictures: Fighting continues in Afghanistan
In Pictures: On base in Kandahar
Sgt. 1st Class Paul Ray Smith's family received the Medal of Honor during White House ceremonies in 2005 for his actions during the Iraq invasion. He was killed when his unit was attacked by Iraqi forces at the Baghdad airport on April 4, 2003 and is credited with saving hundreds of lives. US Army/AP/File
Odas Flake (r.), Vietnam veteran and State Commander of the Order of Purple Heart, displays his medals during a ceremony unveiling the Purple Heart stamp in Los Angeles in 2003. Originally a 'badge of distinction for meritorious action,' the Purple Heart now is awarded to US military who have been wounded or killed in action. Nick Ut/AP/File
Members of the Connecticut Army National Guard Military Funeral Honors Team fold a flag over the casket of Cpl. Primo C. Carnabuci in Clinton, Conn., on May 12. Carnabuci was killed in action during the Korean War. Through DNA testing, his remains were found and brought home more than 60 years after his death. Jessica Hill/AP
Army Pfc. Anthony Scott Miller is seen in a 2002 family photo. Miller's family in San Antonio was notified on April 8, 2003 that he had been killed in action in Iraq. Miller served in the Headquarters Company in the Third Infantry Divison, Second Brigade. San Antonio Express-News, Family Handout/AP/File
Navy Seal Lt. Michael P. Murphy, from Patchogue, N.Y. Mr. Murphy, was killed in 2005 while leading a reconnaissance mission deep behind enemy lines in Afghanistan, posthumously received the nation's highest military award for valor: the Medal of Honor. A destroyer was named after him on May 7 in Bath, Maine. US Navy/AP/File
Maureen Murphy, mother of Medal of Honor recipient Navy Lt. Michael Murphy, stands with Adm. Gary Roughead, the chief of Naval Operations, at a christening ceremony where a warship was given Mr. Murphy's name at Bath Iron Works in Bath, Maine, on May 7. Pat Wellenbach/AP
US Marine Pfc. Geoffrey Morris of Gurnee, Ill., is seen in this undated photo. Assigned to 2nd Battalion, 4th Marines,1st Marine Division, I Marine Expeditionary Force in Camp Pendleton, Calif., Mr. Morris was killed on April 4, 2004, from hostile action in Anbar province in Iraq. Family photo via Chicago Sun-Times/AP/File
Former Arizona Cardinals football player Pat Tillman is shown in a 2003 photo. A 2007 Pentagon investigation recommended that nine officers, including up to four generals, be held accountable for missteps in the aftermath of the friendly fire death of Tillman in Afghanistan in 2004. Photography Plus via Williamson Stealth Media Solutions/AP/File
Sgt. 1st Class Jose R. Perez (l.) hands the flag that draped Pfc. Luis A. Perez's coffin to his son's widow, Molly Perez, at the conclusion of a service at Grove Cemetery in LaFargeville, N.Y., in 2004. Pfc. Perez was killed in action in Fallujah, Iraq, and was posthumously awarded the Bronze Star and the Purple Heart. Watertown Daily Times, Michael Fagans/AP/File
The casket of Army Spc. Joseph A. Kennedy is brought out to the hearse after a funeral service on April 28 at the Church of St. Patrick in Inver Grove Heights, Minn. Mr. Kennedy was killed in combat in Afghanistan on April 15. He was posthumously awarded the Bronze Star and Purple Heart. Jean Pieri/Pioneer Press/AP
US Marines pay their final respects at a memorial service for 1st Marine Division Combat Photographer Cpl. William Salazar of Las Vegas, Nev., at Camp Blue Diamond, on the outskirts of Ramadi, Iraq, in this 2004 photo. Salazar was killed in action in Anbar Province on October 15, 2004. Jim MacMillan/AP/File
Petty Officer 2nd Class Michael A. Monsoor attends cold weather training in Kodiak, Alaska, in 2004. The elite Navy SEAL who threw himself on top of a grenade in Iraq to save his comrades and died in 2006 was posthumously awarded the highest US military tribute, the Medal of Honor, in 2008. United States Navy/AP/File
In Pictures: Sinkholes around the world
In Pictures: Facing the devastation of the Oklahoma tornadoes
Photos of the Day: Photos of the day 05/20
In Pictures: Weather extremes 2013
In Pictures: The Israeli separation barrier: A West Bank wall
In Pictures: Derby Day devotees, Kenyan style
Photos of the Day: Photos of the day 05/16
In Pictures: Dazzle like Beckham
At the Vietnam Veterans Memorial Monday, President Obama began a national commemoration of the 50-year anniversary of the Vietnam War. To Vietnam veterans he said, 'You made us proud, and you have earned your place among the greatest generations.'
At the Vietnam Veterans Memorial Monday, President Obama began a national commemoration of the 50-year anniversary of the Vietnam War – the most divisive war in US history since the Civil War.
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