The Mercenary camp is an adventure map structure in the Heroes of Might and Magic series. In Heroes II, Heroes III and Heroes V, the structure grants a one-time bonus of +1 to the attack skill of visiting heroes. There is no battle, and no cost. A hero can only gain this bonus once, but any hero who visits camp receives the bonus. In Heroes IV, the structure grants a one-time bonus of +3 to the speed skill of visiting heroes.