1.In South Africa, a military body or command; also, sometimes, an expedition or raid; as, a commando of a hundred Boers. "The war bands, called commandos, have played a great part in the... military history of the country."
2.A usually small military unit trained to perform special missions, often behind enemy lines, and usually employing hit-and-run tactics. Such units often have the destruction of fixed targets, such as enemy installations, as their mission, in contrast to normal combat units which engage the enemy army directly.
3.A member of a commando (2) unit.