To be honest, I did not expect to see rabbits in the uniform of French soldiers and at the same time on a French Saint Chamond tank. Considering the fact that kobolds' uniforms are similar to those of British soldiers, and rabbits' uniforms are similar to French ones, and during World War I, France and Britain were allies of the Russian Empire during World War I, I assume that the local Russian Empire will be an ally of kobolds and rabbits. This is just a guess.