In 1945, Joseph Stalin was awarded the special 6-star rank of Generalissimus of the Soviet Union, ranking above the "Marshal of the USSR" that he already had. A special uniform was designed that Stalin considered too ostentatious even for him, which led to the rank being soured on and not awarded to anyone else, even if it technically still existed.
This lora depicts the uniform in question. Main trigger is "GenUSSR", along with "military uniform,uniform,blue jacket,epaulettes,boots,blue pants,hat,peaked cap".