Doctor Tolin Dorden was the chief surgeon for the Tanith 1st Regiment, and it's second oldest officiary. A former G.P from County Pryze on Tanith, Dorden was conscripted by the newly founded regiments due to a shortage of medical personnel, and for many years he was the only fully trained medic in the regiment. He took an oath never to harm as part of his medical training, which he broke only once, in order to save Gaunt's life on Menazoid Epsilon. His son, Mikal Dorden, served in the regiment alongside him, but was killed at Veyveyr Gate in Vervunhive, ending the only Tanith blood line relationship in the Tanith 1st.