Wikipedia
Unterarzt (military)
Unterarzt (short: UArzt or UA) was a military rank in the German Reichswehr and Wehrmacht until 1945.
It describes a qualified or licensed surgeon or dentist of the armed forces with the last or highest Officer Aspirant (OA – de: Offizieranwärter) rank. According to the rank hierarchy it was comparable to Sergeant First Class (de: Oberfeldwebel) or Chief Petty Officer (de: Oberbootsmann) NATO-Rangcode OR7 in anglophone armed forces.