Contruum / Legends Contruum was a planet in the Mid Rim , and was the most developed planet in the dense system of inhabited worlds that made up the Contruum system . Description . Contruum was a brown and blue world circled by satellite s , two fair - sized moons , and a mid - sized orbital shipyard . Belonging to a dense system of inhabited worlds , including Contruum Six , Contruum itself was a tropical world with numerous cities on the equatorial band , with enough farms and arable land on its surface to be considered an agriworld . An industrious planet with ore - smelting plants , foundries , a modest shipbuilding franchise , and lucrative borium mining operations , Contruum was often touted as one of the most preeminent planets outside of the Core Worlds , and was compared to Eriadu in terms of power and prestige - though it was not remotely as ecologically devastated as the infamous polluted Eriadu - with no planet able to rival it in its part of the Mid Rim . Due to its position in industry , aspiring geologists , metallurgists , and engineers from all along the Vaathkree Trade Corridor flock to Contruum to study at its prestigious applied sciences colleges . Graduates and interns alike can easily find work - study programs and employment within the planet ' s foundries , shipyards , and mines , with multiple manufacturers of borium - tipped excavators and industrial drills recruiting heavily from Contruum ' s graduate pool . Equally famous for their spirit of courage and sacrifice , Contruum has a rugged identity with a long history of invasions ; with each invasion ending up with the inhabitants of Contruum rising up and driving invaders back into space . During the rebellion era especially , Contruum waged a war of attrition against the Empire under the direction of Airen Cracken , who would go on to become the planet ' s most iconic contribution to the Rebel Alliance ; Airen made the war so costly to the Empire that shortly before the Battle of Yavin the Empire surrendered to Contruum ' s demands and withdrew from the system entirely . As a result , Contruum was one of the first planets to successfully throw off Imperial occupation , and became a galaxy - wide model for rebellion against the Empire ; indeed , Contruum ' s reputation for insurrection was so powerful that it was slated for destruction had the battle for Yavin turned out differently . History . The Imperial era . In 8 BBY , Imperial forces seized control of the planet ' s Borium operations , expecting that such an action would meet little resistance from the rest of the planet ' s largely scattered and self - sufficient population . They were proved wrong when Airen Cracken and his team of mechanics organized themselves into a guerrilla group , known as Cracken ' s Crew . Avoiding direct attacks on the garrison forces , they wreaked havoc on the Imperial - controlled shipyards and mines , while disrupting the supply infrastructure of the occupation . As the Imperial garrison tried to deal with the saboteurs , a planetary militia was raised , and after a years - long war , the local Moff opted to withdraw his troops , unable to justify the losses that the Empire was suffering in attempting to hold the world . Ultimately Airen Cracken and his son Pash Cracken were considered heroes , and became two of the most iconic contributions of Contruum to the galaxy . The Yuuzhan Vong War . During the Yuuzhan Vong War Contruum was largely untouched , largely thanks to the efforts of Airen Cracken ; after decades as head of Intelligence for the Alliance , Airen returned to his homeworld to personally oversee its defense . To protect the world from invasion , the orbital shipyards were abandoned , and a secret moonbase was established on the planet ' s innermost moon - giving the illusion that there was no military buildup or targets worth attacking . In concert with newly - designed Hapan pulse - gravity interdiction mine s at key hyperspace route exit points , the measures ensured that Contruum would stay beneath the notice of the Yuuzhan Vong , and if they did have visitors , that they could be trapped and blockaded . These tactics proved so effective that the Yuuzhan Vong did not make a serious direct assault on Contruum until the fifth year of the invasion . During the fifth year of the invasion , the Galactic Alliance , correctly anticipating a planned Yuuzhan Vong attack on their capital at Mon Calamari , decided to concentrate half their available fleets around Contruum Six , preparing to strike at Yuuzhan Vong controlled Coruscant while the invaders ' fleet was on the Outer Rim assaulting Mon Calamari . While the Yuuzhan Vong did not directly locate the buildup focused around Contruum 6 , their suspicions were aroused by the increasing numbers of Smugglers ' Alliance ships passing through the system . As a result , during the defense of Mon Calamari , Warmaster Nas Choka ordered four of his fleet ' s battlegroups to break off their attack and strike at Contruum . However , when Zonama Sekot came out of hyperspace above Coruscant , all Yuuzhan Vong warships were recalled to defend their home base , and the fleet at Contruum turned around nearly immediately after entering the system . Subsequently , Contruum was used as a staging point for Galactic Alliance forces in the lead up to the Recapture of Coruscant , and entirely avoided any major conflict with the Yuuzhan Vong . Behind the scenes . In " " , the map places Contruum in the Expansion Region , but the text places it in a " part of the Mid Rim . "