The Irregulars was the name of a collection of small military units of the Alliance to Restore the Republic operating behind enemy lines from secret bases. Often disguised as criminals, merchants, and ordinary citizens, The Irregulars were known to attack less-defended military targets, including bureaucratic cores, factories, garrisons and space stations. They also robbed storehouses, jammed communications and terrorized, and sometimes killed, high-ranking officers, of the Empire. One of the more successful Irregular units was Reekeene's Roughnecks.