I cannot give an in depth strategy on acquiring this achievement as I earned it through luck. But these are a set of required steps before it will trigger the event that unlocks commander Vojtek.
- Poland may be in a faction that is not Soviet, but must remain non-aligned.
- Must be at war with Italy
- Artillery Modernization focus must be completed in the National Focus tree.
- There must be at least one division in Hamadan (Iranian territory)
- There must be at least one division in one of the following Italian territories
~ Tuscany
~ Abruzzo
~ Latium
After these requirements are met, wait 30 days and the event will trigger.