Scott Speicher: January 17, 1991 - During the first night of Operation Desert Storm, Navy pilot Lt. Cmdr. Michael Scott Speicher is shot down over Iraq.
May 22, 1991 - His status is changed from MIA (missing in action) to KIA (killed in action).
January 11, 2001 - His status is changed from KIA back to MIA.
October 11, 2002 - Speicher's status is changed again, from MIA to missing-captured.
March 10, 2009 - His status is changed from missing-captured to MIA.
July 2009 - A crash site is investigated by U.S. Marines after a tip from an Iraqi civilian.
August 2, 2009 - The U.S. Dept. of Defense announces that remains found at the crash site have been positively identified as Speicher's.
507th Maintenance Co. and Apache Helicopter Pilots: March 23, 2003 - Members of the Army's 507th Maintenance Co. become separated from a 600 hundred vehicle convoy traveling from Camp Virginia, Kuwait to Baghdad, Iraq. After mistakenly driving into Nasiriya, the group is ambushed. Nine soldiers are killed in the battle and eight are captured.
Two soldiers die after being captured. - Pfc. Lori Piestewa - first female killed in the Iraq War. - Sgt. Donald Ralph Walters
Five are captured alive and kept together as a group. At some point, they are moved from Nasiriya to Samarra. - Army Specialist Joseph Hudson - Pfc. Patrick Miller - Army Specialist Shoshana Johnson - Specialist Edgar Hernandez - Sgt. James Riley
One seriously injured soldier, Pfc. Jessica Lynch, is taken captive and separated from the other POWs. She is kept by Iraqi forces for a period of time and then taken to an Iraqi hospital.
March 24, 2003 - An Apache Longbow helicopter crashes in Karbala, Iraq. The pilots, Chief Warrant Officer David Williams and Chief Warrant Officer Ronald Young, Jr., try to evade capture but are taken prisoner by Iraqi forces. The pilots are taken to Samarra and eventually join the other POWs from the 507th Maintenance Co.
April 1, 2003 - After receiving a tip from an Iraqi, U.S. forces storm the hospital in Nasiriya and rescue Pfc. Lynch.
April 13, 2003 - U.S. forces arrive in Samarra on their way to a battle in Tikrit. An Iraqi asks them if they've come for the Americans and then leads them to the seven POWs.
2004 - The Army concludes that Walters was captured, taken to another location and shot. His status is then changed from KIA to POW-Murdered.
Keith M. Maupin: April 9, 2004 - Army Reservist Spc. Keith Matthew Maupin is captured by insurgents after his convoy comes under attack near Baghdad International Airport in Iraq.
April 12, 2004 - The military classifies him as "duty status whereabouts unknown" (DUSTWUN).
April 16, 2004 - Al Jazeera broadcasts a videotape of Maupin made after his capture. The US Army declares him missing-captured.
June 28, 2004 - A videotape allegedly showing Maupin's execution is broadcast by Al-Jazeera. The U.S. Army states that it is impossible to identify the person on the tape as Maupin.
March 30, 2008 - Maupin's family announces that his remains have been found in Iraq, and positively identified by DNA testing.
Kristian Menchaca and Thomas Tucker: June 16, 2006 - Insurgents attack a check point in Yusufiya and capture two soldiers, Pfc. Kristian Menchaca and Pfc. Thomas L. Tucker.
June 19, 2006 - U.S. forces locate the bodies of Menchaca and Tucker. The bodies show signs of severe torture and mutilation.
Ahmed K. Altaie: October 23, 2006 - Spc. Ahmed K. Altaie disappears in Iraq. It is initially unclear whether he has been kidnapped or left intentionally.
December 11, 2006 - The DOD changes his status from "duty status whereabouts unknown" to missing-captured.
February 14, 2007 - A videotape of Altaie appears on an insurgent website, but it's unclear when the tape was made.
February 25, 2012 - The Pentagon confirms that it has received and positively identified the remains of Altaie. No further information is given.
10th Mountain Division's Second Brigade: May 12, 2007 - A military convoy is raided west of Mahmoudiya, Iraq. Four American soldiers are killed. A massive search ensues for missing U.S. troops. They are part of the 10th Mountain Division's Second Brigade out of Ft. Drum, New York.
May 14, 2007 - The Islamic State of Iraq, a Sunni insurgent group, claims it has captured three U.S. soldiers.
May 15, 2007 - The missing soldiers are identified as Spc. Alex R. Jimenez, Pfc. Joseph J. Anzack Jr., and Pvt. Byron W. Fouty. Their status is listed as DUSTWUN, duty status whereabouts unknown.
May 24, 2007 - A body found earlier in an Iraqi river is positively identified as Pfc. Joseph J. Anzack Jr.
June 4, 2007 - The Islamic State of Iraq releases video showing what appears to be the military identification cards of the two missing American soldiers. Above the photos, written in Arabic, is the message, "Bush is the reason for the loss of your prisoners."
June 27, 2007 - The Department of Defense has changed the status of Pvt. Byron W. Fouty and Spc. Alex R. Jimenez serving in Operation Iraqi Freedom from DUSTWUN to missing-captured.
July 9, 2008 - The remains of Fouty and Jimenez are discovered in Iraq and positively identified by the Armed Forces Medical Examiner the next day.
Sgt. Bowe R. Bergdahl: June 30, 2009 - A U.S soldier is captured in southeastern Afghanistan along with three Afghan soldiers, after leaving his post.
July 2, 2009 - A U.S. military official says that the soldier is being held by the clan of warlord Siraj Haqqani. The Taliban previously claimed to have captured the soldier.
July 19, 2009 - A videotape of Bergdahl is released by his captors.
December 25, 2009 - His captors releases another video, showing a soldier believed to be Bergdahl.
April 7, 2010 - A video posted on a radical website purportedly shows Bergdahl performing a series of exercises.
June 12, 2010 - Bergdahl is promoted to specialist.
December 7, 2010 - His captors releases a nearly 45-minute video of a thin Westerner identified as Spc. Bowe Bergdahl.
June 12, 2011 - Bergdahl is promoted to sergeant.
June 6, 2013 - Bergdahl's family announces that "through the International Committee of the Red Cross, we recently received a letter we're confident was written to us by our son."
January 2014 - A U.S. military official tells CNN that the military has obtained a new video of Bergdahl.
U.S. Paratroopers: November 4, 2009 - Two U.S. paratroopers from the 4th Brigade Combat Team, 82nd Airborne Division are reported missing during a supply mission in Afghanistan.
November 11, 2009 - The body of paratrooper Benjamin Sherman is found near the Morghab river in Afghanistan.
November 18, 2009 - The Dept. of Defense announces that one soldier remains missing in Afghanistan, Army Sgt. Brandon Islip of Richmond, Virginia.
November 29, 2009 - Islip's body is recovered in Afghanistan.
U.S. Sailors: July 23, 2010 - Two U.S. sailors are reported missing after departing their compound in Kabul City, Afghanistan in a vehicle and not returning.
July 27, 2010 - The DoD announces that the body of Petty Officer 2nd Class Justin McNeley, who died from wounds sustained on July 23, was found in Logar province on July 25. Petty Officer 3rd Class Jarod Newlove is listed as DUSTWUN. Search and recovery efforts are ongoing, and the incident is under investigation.
July 29, 2010 - The Navy confirms Jarod Newlove is dead and that his body was recovered from a river July 28.