- "The tsars have always used Cossacks as a kind of police force. Sometimes they do things that are... not very pleasant."
- ―Helen Margaret Seymour[src]
The Cossacks are a group of people living in southern Russia.
A young Indiana Jones first encountered Cossacks in Russia during his father's world lecture tour when he ran away from his parents and met Leo "Lev" Tolstoy, who was also fleeing family members. Cossack policemen were called in to find the missing Jones.
Later, a pair of Cossacks find Indy and Lev at an inn with orders to take Tolstoy back to his family. Tolstoy refuses and tells them to go away. Despite Indy caliming that they were in a free country and couldn't just drag someone away, the Cossacks attempted to catch them. Indy hits the pair with a table and Tolstoy and he seek refuge in a barn for the night.
The next day they see a whole Cossack regiment pass by and Tolstoy mentions tells the boy that they are absolutley brutal, slaying anyone if given orders. They even brought cannons, meaning they were prepared for anything. The runaways manage to escape and attach themselves to a group of traveling gypsies they meet.
A Cossack regiment attacks the gypsies at night after they make camp, burning it down and scattering the inhabitants. Tolstoy is injured during the raid but Jones and he manage to get medical help at a nearby house once the Cossacks leave and were both eventually reunited with their families.
After he became a spy during World War I, Indiana Jones had another encounter with the Cossacks in 1917. Friends with a group of Bolsheviks at a time when Russia was creeping toward revolution, Jones was unble to stop them marching toward the square which was being protected by Cossacks armed with machine guns.
When Jones arrived, the Cossacks began firing on the Bolsheviks and Jones' friend, Sergei was hit and died in front of him. In 1992, Jones discovered a photograph of the demonstrators in an American museum and realised he was in it as but a blur.
- The Young Indiana Jones Chronicles – "Young Indiana Jones: Travels with Father" → Travels with Father
- The Young Indiana Jones Chronicles – "Petrograd, July 1917" → Adventures in the Secret Service
- The Further Adventures of Indiana Jones – "Trail of the Golden Guns"