What is "irminenschaft"

Irminenschaft (or, Irminism, Irminenreligion) is a current of Ariosophy based on a Germanic deity Irmin which is supposedly reconstructed from literaric, linguistic and onomastic sources. Among other sources the Prefix "Irmin" is documented in the Irminsul "great pillar that supports all"/"Columna Universalis Sustenans Omni", as described in Einhards 'Vita Karoli Magni', and informed by Tacitus (~1st century) via a mentioned Germanic tribe name of Hermiones; The Old Saxon adjective irmin being synonymous to "great, strong". As such it may also have been an epithet of later deities like Ziu ( Týr) or Wodan ( Odin)). Purported evidence also stems from the occurrence of the word "Irmingot", found in the Old High German " Hildebrandslied". Notably the Nazi occultist Karl Maria Wiligut claimed a historical Irminism, established in 12,500 BC, later ousted by Wotanism.