The Russian peasant
is the ISO standard unit
The Russian revolutions of 1905, February 1917, October 1917 and the Russian Civil War of 1918-20 were all measured in Russian peasants. The leaders of these conflicts may have been Czars, Reds, Whites or Bolsheviks but the vast majority of those who died were Russian peasants.
This appears to be part of the motivation behind both Russian anarchist Mikhail Bakunin's founding of Russian nihilism and of the famous russian roulette.