The game is measured in years. Each year is divided into two turns, Spring and Fall
There are also two mini-phases. After Spring comes Summer Retreats, after Fall, Winter Builds.
Before each turn, every player submits orders for his units to me, the game master. Once the deadline has passed I will resolve the turn.
Spring is the first turn of each year. Provinces captured in spring won’t change ownership unless occupied through the end of fall turn.
Summer and Winter are both mini-phases. During each of these two phases, you choose where dislodged units retreat. This is important, because if two units attempt to retreat to the same territory, they are both destroyed. You may choose to disband a unit rather than retreat. Units may only retreat to provinces that they could normally move to– armies can’t retreat out to sea etc.
Fall is the second turn of each year. Provinces occupied at the end of Fall will change hands. The effect of this distinction is to give players the opportunity to recapture provinces lost earlier in the year before they flip.
Immediately following Fall turn, resolve retreats as you would during summer. After retreats have been resolved, move on to “Winter builds”.
Following Fall turn is a mini-phase called “Winter Builds”. After provinces have changed hands, you check to see how many supply centers you have vs. how many units you have. Do you have more supply centers than units now? You can build new armies or fleets on your supply centers! Do you have fewer supply centers than units? You must choose to disband units. Each supply center supports one unit.