The school of thought concerning methods of combating the Valkyria, a superhuman being with godlike power. Defying Death itself was thought impossible until the development of mana weapons and alchemy.
As humans enhanced their control over Ragnite, so too did they learn ways of fighting otherworldly entities. These theories were applied to Jutish weapons and tactics during the Liberation War.
This caused a philosophical rejection of Ruzi imperialism, which led to the rise of Vanargand, the Anti-Valkyria Squad.