Cossack Hetmanate
Cossack Hetmanate is a Fortress Age Revolutionary Nation for the Poles, with Chyhyryn as its Home City. It does not turn Settlers into ordinary Revolutionaries: Settlers become Khutorians and can still be trained at Town Centers. It also rebuilds the Polish roster around Haidamaka Riflemen, Haidamaky and Cossack Daredevils.

Access & effects
The transition upgrades Settlers into Khutorians. Crossbowmen are replaced by Haidamaka Riflemen at Barracks, Military Folwarks, Forts and on the map; Retainers are replaced by Haidamaky at Stables, Folwarks, Forts and on the map. Foot Cossack Daredevils become available at Barracks, mounted Daredevils at Stables, and both can be trained at Forts. This changes production and the available specialist roles, so existing army plans based on ordinary Crossbowmen and Retainers need to be reconsidered.
Availability
Definitive Edition; Fortress Age. Poles only. Settlers upgrade to Khutorians; the transition replaces Crossbowmen and Retainers and unlocks Foot and Mounted Cossack Daredevils. Home City: Chyhyryn.
Army & economy
Cossack Hetmanate is an earlier Fortress Age transition that can preserve economic growth while changing the army. Khutorians can continue to be trained, so the player is not forced into a workerless all-in. Use the new Riflemen, Haidamaky and Daredevils according to the opponent’s composition and production access; do not assume they are one generic unit with the same counter profile. Protect the resource base while adding the new units, since the route’s value includes continued economy as well as its military replacements.
Roster replacements and production
The Cossack route changes more than a unit’s label. Haidamaka Riflemen take the Crossbowman slot, while Haidamaky replace Retainers; their production buildings differ, so use Barracks and Military Folwarks for the foot rifle line and Stables or Folwarks for the mounted replacement. Forts provide access to several of the new options. This broader production network can help adapt the army, but it also means that old queues and shipment assumptions may no longer match the available units.
Khutorians and the Fortress timing
Because Settlers upgrade to Khutorians instead of becoming Revolutionary infantry, the player can maintain a worker economy and continue training Khutorians at Town Centers. This makes the route less dependent on an immediate finishing attack than a typical revolution. Use the Fortress timing when the new roster addresses a matchup or objective and the economy can support continued unit production. Preserve enough workers and protect Town Centers so that the military replacements do not come at the cost of resource flow.