Your force is the Third Workers and Peasants Shock Brigade under the fraternal leadership of People’s Commissar Nasti Tchestikov and Military Specialist Comrade Colonel Igor Tubugerov. You have been dispatched on a vital political mission to Urga.
Your task is to disseminate soviet propaganda amongst the populace and undermine the counter revolutionary attempts of the imperialist powers to destabilise Soviet influence in the region.
As part of your mission, you have been instructed to contact a Soviet agent Vladimir Ilych Proletarski, who has been dispatched to Urga by Lenin himself to make contact with secret revolutionary cells inside the city.
You have also been instructed to seek out and destroy any forces of reactionary imperialist bourgeois counter revolution that you may encounter on your march. These are rumoured to be infiltrating the region through the supposedly un-traversable wastes of the Gobi Desert.
(Jim’s Bolshevik army may not have the best troops but it is well-motivated, thanks to the political commissars and their lively Marxist Leninist ideological debate, not to mention their habit of shooting anybody that doesn’t show enough enthusiasm!)