Washington, D.C., Nov. 11, 2009: A visitor to the National World War II Memorial in Washington, D.C., looks at wreaths placed during a Veterans Day ceremony on a rainy Wednesday.

Logar province, Afghanistan, Sep. 13, 2014: U.S. soldiers with “Dragon Platoon,” 2nd Squadron, 3rd Cavalry Regiment establish fighting positions at a Logar province combat outpost.

Frankfurt, Germany, Sep. 10, 1966: Muhammad Ali moments before the start of the heavyweight title bout against Karl Mildenberger. Standing behind him in a white shirt is his trainer Angelo Dundee.

Kadena, Okinawa, March 21, 1958: Miss Haruko Ota, a third grade teacher, peeks over the shoulder of Brenda Sheets, 10, daughter of Master Sgt. and Mrs. W. G. Sheets, as pupils with the right answer raise their hands in their Kadena Air Base fourth grade classroom.

Camp Kaiser, South Korea, December 1958: Lynne Kaelber (seated) and Didi Hasson (standing) chat with two of the men of the 7th Military Police Company at Camp Kaiser.

Lop Buri, Thailand, Feb. 9, 2009: Smoke grenades cloud a mock United Nations humanitarian relief distribution station under attack in Lop Buri, Thailand, during a training drill for Cobra Gold ’09.

Kabul, Afghanistan, Sep. 28, 2019: Hasiba, 19, prepares to vote in her first presidential election at a polling station in downtown Kabul, Afghanistan, Sept. 28, 2019.

Over Afghanistan, Jan. 6, 2015: Afghan National Army soldiers rest in the back of an Mi-17 helicopter after being evacuated from a remote outpost in southern Afghanistan.

Norfolk, Virginia, Jan. 9, 2009: BMSN Riscinda Rogers, Chicago, Il., left, and the crew of the Nimitz-class aircraft carrier USS George H.W. Bush receive instructions to prepare the ship for the arrival of President George W. Bush for the next day’s commissioning ceremony.

Grafenwoehr, Germany, Feb. 3, 1969: Infantry troops taking part in the Carbide Ice exercise are silhouetted against the morning sun as they roll through the village of Koenigstein in the Vilseck — Grafenwoehr area.