During the [[Bloodborn]]'s invasion of [[Ultramar]] in 854999.[[M41]]<sup id="fn_1c_back">[[#fn_1c|[1c]]]</sup>, Telion and the majority of the 10th Company was deployed to [[Quintarn]], where the 6th and 7th Reserve Companies under Captains [[Reserve Company|Reserve CompaniesEpathus]] and [[Ixion]] were battling against the forces of the [[Dark Mechanicus]] Adept [[Votheer Tark]]. Although some of the Companies' officers demanded that Telion and his Scouts attach themselves to the main order of battle, Telion ignored these demands and faded into the forests with his men, invisibly watching over the Marines and striking without warning at the [[Chaos]] forces<sup id="fn_4_back">[[#fn_4|[4]]]</sup>.