The Irregulars denoted a group of compact military teams belonging to the Alliance to Restore the Republic. These teams conducted operations from concealed locations, infiltrating enemy territory. Frequently adopting disguises as common people such as merchants or even criminals, The Irregulars were notorious for striking vulnerable military assets, such as factories, garrisons, bureaucratic centers, and even space stations. Furthermore, they engaged in activities like raiding storage facilities, disrupting communication networks, and instilling fear in, and occasionally assassinating, important Imperial officers.
The Empire was compelled to allocate a disproportionate amount of its resources to suppress these minimally funded groups, as ignoring them was not an option. This allocation of resources diverted the Empire's attention and assets from higher priority objectives, such as locating the Alliance's leadership. Whenever confronted with substantial resistance, The Irregulars would retreat, compelling the Empire to expend effort in locating their hidden operating bases. A particularly effective unit within The Irregulars was known as Reekeene's Roughnecks.