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If you’ve read A Farewell to Arms or spent any time studying the World War I, you’ll remember that soldiers spent much of their time hiding from the enemy in trenches. But what did they do down there when they weren’t firing weapons? Some, it turns out, were painting scenes from the front lines and sending them as postcards to loved ones back home. A new touring exhibition sponsored by the German Foreign Office, “Postcards From the Trenches,” features 50 of these cards painted by Dresden artist and soldier Otto Schubert as well as wartime scenes commissioned by the U.S. Army. Propaganda posters will be on display, too, offering insight on Great War from both perspectives. It’s not quite Hemingway, but it tells a far more compelling story than your history textbook. The exhibition is on view Tuesdays to Fridays noon to 4 p.m. to Sept. 27 at Pepco Edison Gallery, 702 8th St. NW. Free. (202) 872-3396. germany.info.