A mission type in which a fleet will attempt to take over the attacked colony. Your fleet will have to be able to quell all rebels that will result from the attempted conquering because colonists are generally loyal to their leader and unwilling to go gently into that good night.

Please be aware that gravity affects the size of ships that can actively attack ground defenses at a colony.

4000 / Planet Gravity = tonnage limit
e.g. 4000 / 10.0 = 400 tons

Beware that conquering a colony is very destructive business and much of the colonial assets will be lost in the struggle. Most of the military assets will be destroyed. Other buildings and landmass might also be lost. Population is also killed and many more may be displaced.

Population killed depends on small craft ship count, the amount of guns they have, and their rate of fire. At least 100pop/m² will survive.