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|Segmentum=[[Segmentum Tempestus]] {{fn|3}} or [[Ultima Segmentum]]{{Fn|1c}}

During the [[Horus Heresy]], in 008.[[M31]], Luth Tyre was invaded by a [[Traitor]] force of [[Death Guard]], [[Word Bearers]] and [[Emperor's Children]], intent upon securing its natural resources and [[Mechanicum]] operated refineries to support the Traitor hosts' insatiable appetite for materiel. Due to the planet's hostile environment, only [[Legiones Astartes]] with their transhuman phisiologyphysiology, [[Solar Auxilia]] with their their protective [[Void Armour (Solar Auxilia)|warsuits]]; and Mechanicum ground forces could fight effectively upon the surface, beginning thus a bitter campaign for dominance of the airspace above the scattered refinaries refineries that continued for many months in an effort to secure landing zones within the Mechanicum complexes. To make matters worse, the deserts were home to deadly tunneling predators known as [[Ambull]]s. On numerous occasions the traitor Astartes were forced to mount rescue missions using [[Storm Eagle]]s and [[Thunderhawk]]s to extract ground forces under attack by the [[Xenos]] life forms, or to airlift entire companies into battle into battle in order to avoid the risk of attack.{{Fn|2}}

By 011.M31, the world contained [[Fortress World|fortresses]] and sprawling [[Industrial World|refineries]], that made it a key stronghold and mustering ground, for the [[Iron Warriors]].{{Fn|1c}}. While under the [[Traitor Legion]]'s control, Luth Tyre continuously supplied them with war material, fuel and chemicals. As the Heresy raged in 11.[[M31]], the world's Iron Warriors garrison came into contact with a [[Death Guard]] fleet from [[Barbarus]]. It was among the forces defending their [[Homeworld]], which were in the midst of a [[Subjugation of Tyrinth|campaign]] to seize resource rich [[Imperial]] worlds, in order to form an empire for the Death Guard. After learning of this, the Iron Warriors agreed to give supplies to the Death Guard, in exchange for a share of their plunder taken from pillaged Imperial worlds.{{Fn|1a}}. In 12.M31, the Iron Warriors [[Battle Cruiser]] [[Visage of Vengeance]] arrived at Luth Tyre. It had escaped from the [[Battle of Tallarn]], but had been trapped in the [[Warp]] until finally appearing near the Iron Warriors' held world. The survivors aboard the Visage soon joined the Traitor Legion's garrison on Luth Tyre and brought with them a large number of indentured [[Mechanicum]] automata. However there was little trust shared between the newcomers and the garrison, who seemed to prioritize the needs of the Death Guard over their own brethren.{{Fn|1b}}

Later in that same year, Luth Tyre came under attack by the [[Passage of the Angels|vengeful]] [[Dark Angels]], who awere were led by their [[Primarch]] [[Lion El'Jonson]] himself. Because the world sat upon a stable [[Warp Route]], however, the Primarch could not afford to order Luth Tyre's destruction, like he had recently done to other worlds. Instead, El'Jonson demanded his [[Orders Militant of the First Legion|Orders]] to capture the world in the name of [[Terra]]. The Dark Angels' fleet then unleashed an orbital bombardment upon Luth Tyre, which set the upper layers of its atmosphere ablaze and fused the world's desert into plains of jagged glass. The Legion's Orders attacked afterwards and though the [[Iron Warriors]] and their [[Death Guard]] allies put up a valiant resistance, they were overwhelmed by the invaders' sheer numbers. One by one, Luth Tyre's fortresses and refineries were destroyed by the Dark Angels' Orders, though, they suffered heavy losses as well. As the world began to fall, a group of Death Guard, Iron Warriors and [[Dark Mechanicum|Traitor Mechanicum]] forces launched a daring attempt to escape aboard [[Warp]]-capable craft. They successfully did so, after fighting through the Orders and packs of raging [[Ambull]]s, to reach Luth Tyre's south pole spaceport. Their crafts managed to evade the Dark Angels' fleet and the world was claimed by the Dark Angels shortly afterwards{{Fn|1c}}. In 13.M41, however, the Traitor forces that escaped Luth Tyre reach the Death Guard's [[Homeworld]], [[Barbarus]],{{Fn|1d}}, and aided in its [[Siege of Barbarus|defense]], when the world was later attacked by the Dark Angels.{{Fn|1e}}

It is not clear where ''Luth Tyre'' lies. However since the world was part of the [[Dark Angels]]' [[Passage of the Angels]] campaign, it is either in [[Segmentum Tempestus]] or the southern parts of [[Ultima Segmentum]].{{Fn|1c}}