According to the Moscow Times, Russia’s state TV network Channel One aired a documentary showing this poster as an example of WWI US propaganda but it’s actually fan art for the video game Team Fortress 2. From The Moscow Times:
A voiceover claimed the painting had been created by a U.S. organization called the Committee on Public Information, which allegedly created propaganda posters of “German monsters” to get the message across that “Germans are the devil incarnate…”
The poster was actually created by a Finnish artist who goes by the nickname TankTaur, TJournal reported. It was published on the DeviantArt website in 2009 and can still be found there.
“Russian State TV Airs ‘Video Game Poster,’ Claims It’s U.S. Propaganda“