View source for Defence of the Three Planets

The '''{{PAGENAME}}''' was a battle during the [[Horus Heresy]].{{Fn|1}}

Waged during the [[Shadow Crusade]], the war saw loyalists in far eastern sectors of [[Ultramar]] try to rid the [[Three Planets]] of traitor forces. [[House Vornherr]] and [[House Vyronii]] fought on the canal basins of [[Martrek V]], and when the traitors threatened to drive the loyalist [[Knights]] back to their landing zones, they received aid from [[Blackshield Knight House]]s. However after the Blackshields had dealt with the traitors, they turned their guns on the loyalists and declared the Three Planets for the [[Crownless King]]. A long and bitter war began between the Knight Households.{{Fn|1}}

==See also==
*[[Battles of the Horus Heresy (List)]]

==Sources==
*{{Endn|1}}: [[Adeptus Titanicus: Shadow and Iron]], pg. 9

{{HHBattles}}

[[Category:Battles (Collegia Titanica)]]
[[Category:Battles (Dark Mechanicus)]]
[[Category:Battles (Horus Heresy)]]
[[Category:Battles (Knights)]]