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Calderis was first settled in a pre-[[Imperial]] era.{{Cite ThisMarker End}}

Its [[Aestimare]] is H321, and its technology level is said to be on par with the early [[Wikipedia:Industrial Revolution|Industrial Revolution]].{{Cite ThisMarker End}}

Like many feudal worlds, Calderis's [[Planetary Governor]] lives in orbit around the planet, and makes sure that the [[tithe]]s of men and ores are properly paid. The [[Blood Ravens]] do not maintain a constant presence on the planet, instead opting to return every few years or decades to recruit.{{Cite ThisMarker End}}

Owing to the planet's harsh, arid climate, the locals are hardy and good stock for recruitment of [[Space Marines]]. Throughout the centuries, however, Calderis has suffered several outbreaks of [[Feral Ork]]s. In recent seasons, the Orks have grown in number, power, and resources, forcing the Governor to send in Calderis's [[PDF]] to restore order.{{Cite ThisMarker End}}

Recently, during the [[First Aurelian Crusade]], the [[Blood Ravens]] also sent fourteen [[Battle Brother]]s, led by [[Space Marine Captain|Captain]] [[Davian Thule]] to assist.{{Cite ThisMarker End}}