Retired 1st Sgt. Keith Melick (right) and retired Army Special Forces Command Sgt. Maj. Roy Wilkins met when Melick, a medic, treated Wilkins after an IED explosion. They were reunited nearly 10 years later. StoryCorps hide caption

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U.S. soldiers stand at a checkpoint around Lakokhel camp in Afghanistan in 2010. Many soldiers return from war suffering from "moral injuries," or dealing with the fact that their sense of right and wrong was violated. Martin Bureau/AFP/Getty Images hide caption

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Former Army Sgt. Ryan Sharp sat down with his father, Kirk Sharp, to talk about what happened when Ryan returned home after two tours in Iraq. StoryCorps hide caption

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Shirley Parrello's son, Brian, died in Iraq almost ten years ago. Sgt. Kevin Powell was with him that day, and he says he can still picture Brian Parello in the moments after the IED exploded. Storycorps hide caption

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When Sgt. Paul Braun (right) first met Philip, the Iraqi interpreter assigned to his company, he didn't trust him. But after his tour was over, he worked for years to get Philip a visa to come to the U.S. Storycorps hide caption

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Paul Pillar (right), a former national intelligence officer, with teammate Aaron David Miller, argues that the U.S. should have a smaller military footprint in the Middle East. Samuel LaHoz/Intelligence Squared U.S. hide caption

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Plaster casts taken from soldiers' mutilated faces (top row), new sculpted faces (bottom row), and final masks (on the table) sit in the studio of Anna Coleman Ladd in 1918. American Red Cross/Anna Coleman Ladd papers/Archives of American Art/Smithsonian Institution hide caption

itoggle caption American Red Cross/Anna Coleman Ladd papers/Archives of American Art/Smithsonian Institution

Kevin and Joyce Lucey remembered their son, Jeff, in an interview with StoryCorps in Wellesley, Mass. Jeff, a U.S. Marine, took his own life months after returning from a deployment in Iraq. StoryCorps hide caption

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This image, posted on a militant website, shows an Islamic State fighter waving a flag from a captured government fighter jet in Raqqa, Syria. The Islamic State captured the city in northeastern Syria last year and it has effectively served as its capital. Uncredited/AP hide caption

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