The third way "SFB" can be played is the ""campaign game"", or simply a campaign. This mode of play involves a number of "SFB" tactical games that are played sequentially in order to simulate an entire war or theater of war between two or more game races (Federation, Kzinti, etc.) or teams. There is a "strategic" level game map which lays out the territories and borders/fronts of the races/teams, and indicates the economic and military resources controlled by each (homeworlds/capitals, planets, starbases, shipyards, etc.). In complex campaigns there are usually also separate records kept of national resources. Ships and other units are gathered into "fleets" and moved on the strategic gameboard until the opposing forces come into contact (almost always by moving into a single "battle hex") and then combat commences in the form of the so-generated SFB combat scenario. Ships destroyed in one game are unavailable for later battles, damaged ships are repaired, fighters and drones and other "expendables" replenished, etc. between battles. The vanquished forces of each battle are usually required to retreat, and the victor(s) are free to advance or withdraw at will. Play continues until one side is destroyed or conquered.