Lt. Kijé is the story of an imaginary soldier, created when the Russian Tsar misread a smudged name on a list of his men.
Everyone around the Tsar was too afraid to tell him there was no such person, so they just invented an entire life for the nonextistent Kijé. He gets married and become a hero — all on paper. When the Tsar finally demands to meet Kijé, the military holds his funeral.
Prokofiev wrote the musical score to the 1934 Russian film that tells the story. You can check it out here.