Colonel Arsenescu, together with a fellow army officer, Toma Arnăuţoiu, formed a group named "Haiducii Muscelului" (Romanian for "The Outlaws from Muscel").[1] Arsenescu's resistance group operated out of the Southern Făgăraş Mountains. He was captured by the Securitate in 1961 and executed in 1962 at Jilava Prison. A notable member of Arsenscu's resistance movement was Elisabeta Rizea, who was captured by the Securitate at the same time as he was.[2]