Hammer and sickle

A hammer and sickle was a communist symbol. It resembled a crossed hammer and sickle typically in yellow on a red background.

It was the emblem of the Soviet Union (COMIC: Target Practice) and was present on their flag. (TV: Before the Flood)

Uses
A map of the Soviet Union was seen on a screen inside the Operations Room at Area 51. Superimposed on the map was a hammer and sickle. (TV: Dreamland)

Among the patches on Ace's jacket was a star-shaped patch with the Soviet hammer and sickle. (TV: Dragonfire - Survival etc.) When this was noticed by Captain Sorin, Ace informed him that it was bought cheap in a market. Sorin promptly gifted her his own Soviet badge with the hammer and sickle. (TV: The Curse of Fenric)

Hammer and sickle badges were present on the uniform of Soviet armed forces members, (TV: The Curse of Fenric) such as on the peaked hat of Captain Zhukov. (TV: Cold War)

Behind the scenes

 * The hammer and sickle appears on the covers for the audio stories Peshka and The Night Witches, and the novels Endgame and The Beast of Stalingrad.