During Windermere's war of independence, Wright Immelman dropped a dimensional bomb on the planet, wiping out the New United Nations Spacy forces stationed there along with scores of civilians. He was killed after his VF-22 Sturmvogel II crashed; his body and the wreckage were recovered by Windermerean forces shortly thereafter. N.U.N.S. had kept the incident a secret for years due to their non-compliance to treaties prohibiting the use and transport of dimensional weapons. Arad Mölders was present during the time of the conflict, and refused to believe reports that Wright would willingly commit such an atrocity.
It is revealed through the VF-22's flight recorder that Wright was a spy and he had deviated from his mission to drop a dimensional bomb on Windermere's Protoculture Ruins and dropped it where casualties would be kept to a minimum. He had also given a young Freyja Wion an Earth music player prior to his last mission. He also maintained contact with his son, Hayate Immelman by sending him cryptic notes about where he was stationed as a N.U.N.S. officer.