Ulkein Worlds

Ulkein Worlds is a group of five closely-knit systems located in the Eastern Fringe. Surrounded by the wilderness space known as Ulkein Expanse, the sub-sector's closest neighbors are the Vigilius sector in south, Arteside sub-sector in the west and Telleran in the north.

Overview
Cluster of the five inhabitable star systems was found by Rogue Trader Harrold Ulkein in late-M31 and the area was named after its founder. It was ruled by Franciscus Ulkein, first cousin of Harrold, until 956.M31 when he resigned his office and allowed the colonials from Lova Regal to take over the area's government. Ulkein Worlds sub-sector was established in 972.M31 by the like-minded colonials who pleaded the High Lords of Terra for a battlefleet with what to secure their borders.

Worlds

 * Alicia III - frontier world which has failed to develop into a proper civilised world. Alicia III was overrun by the orks in M38 but was fought back in 002.M39 by the efforts of Astra Militarum. It was overrun again, again by the orks, in early-M40 and has remained in the hands of the green menace since.
 * Harrold Maxima - current capitol of the Ulkein Worlds. Harrold Maxima is a civilised world of 8 billion inhabitants.
 * Dijuana - a mining world with a large ogryn population. Dijuana has been attacked by the orks for six times in total and its planetary defense forces have repelled the attackers every single time.
 * Ulkein Major - original capital of the Ulkein Worlds. Ulkein Major was overrun by the orks in early-M40 and has remained contested ever since.
 * Ulkein Supra - originally an Imperial civilised world, it was overrun by the orks in M38.

Battlefleet Ulkein
Cerbera Lane and the sub-sector itself are protected by Battlefleet Ulkein which is the first and foremost military arm of the sub-sector. It is largely built of vessels of older designs and its doctrine stresses on long range patrol rather than direct fleet engagement.