Leutnant is the lowest Junior officer rank in the armed forces of Germany (Bundeswehr), the Austrian Armed Forces, and the military of Switzerland.
Stabskapitänleutnant, short: StKptLt / in lists: SKL, is the highest Fachdienstoffizier rank in the German Navy.
Kapitänleutnant, short: KptLt/in lists: KL, is an officer grade of the captains' military hierarchy group of the German Bundeswehr. The rank is rated OF-2 in NATO, and equivalent to Hauptmann in the Heer and Luftwaffe. It is grade A11 or A12 in the pay rules of the Federal Ministry of Defence.
Oberleutnant is a senior lieutenant officer rank in the German-speaking armed forces of Germany (Bundeswehr), the Austrian Armed Forces, and the Swiss Armed Forces. In Austria, Oberleutnant is also a designation for certain positions in the federal police and prison guards. In the former West Germany, it was also a rank in the Federal Border Guard (Bundesgrenzschutz).
A senior officer is an officer of a more senior grade in military or other uniformed services. In military organisations, the term may refer to any officer above junior officer rank, but usually specifically refers to the middle-ranking group of commissioned officers above junior officer ranks but below flag, general or air rank. In most countries, this includes the ranks of lieutenant commander/major/squadron leader, commander/lieutenant colonel/wing commander and naval captain/colonel/group captain, or their equivalents. In some countries, it also includes brigadiers and commodores.
Kommodore was the highest senior officer rank in the German Kriegsmarine, comparable to commodore in anglophone naval forces. There was no counterpart in the German Heer and Luftwaffe, but Kommodore would have been comparable to Oberführer in the Waffen-SS.
Fähnrich is an officer candidate rank in the Austrian Bundesheer and German Bundeswehr. The word Fähnrich comes from an older German military title, Fahnenträger, and first became a distinct military rank in Germany on 1 January 1899. However, Fähnrich ranks are often incorrectly compared with the rank of ensign, which shares a similar etymology but is a full-fledged commissioned officer rank.
Captain is the name most often given in English-speaking navies to the rank corresponding to command of the largest ships. The rank is equal to the army rank of colonel and air force rank of group captain.
Fähnrich zur See designates in the German Navy of the Bundeswehr a military person or member of the armed forces with the second highest Officer Aspirant rank. According to the salary class it is equivalent to the Portepeeunteroffizier ranks Bootsmann (Marine) and Feldwebel of Heer or Luftwaffe.
Linienschiffsleutnant is a German language variant of the naval officer rank ship-of-the-line lieutenant. The rank is used by the Belgian Navy and formerly the Austro-Hungarian Navy.
Seekadett is a military rank of the Bundeswehr and of former German-speaking naval forces.
Oberstarzt (OTA) is a military rank in German speaking armed forces. It denotes a medical staff officer surgeon or medical staff officer dentist and is comparable to Colonel (de: Oberst) or Captain (naval) (de: Kapitän zur See) NATO-Rangcode OF5 in anglophone armed forces.
The rank insignia of the Federal Defence Forces indicate rank and branch of service in the German Army, German Air Force, or the German Navy.
Lieutenant field marshal, also frequently historically field marshal lieutenant, was a senior army rank in certain European armies of the 17th to 20th centuries. It emerged as the rank of field marshal came to be used for the highest army commander in the 17th century. In German-speaking countries the commander-in-chief usually appointed an "under marshal" or "lieutenant field marshal" to support and represent the field marshal. Amongst his functions as the personal deputy to the field marshal, were the supervision of supply depots and routes, and inspection of the guards.
Fregattenleutnant was an officer rank in the Austro-Hungarian Navy. It was equivalent to Oberleutnant of the Austro-Hungarian Army, as well to Oberleutnant zur See of the Imperial German Navy. Pertaining to the modern day's NATO rank code it could be comparable to OF-1a (senior).
The rank insignia of the Austro-Hungarian Navy were worn on and on sleeves for navy jackets and coats, or on shoulder straps of shirts and white jackets. Officers' ranks were indicated by lines of 1.3 centimetres (0.51 in) gold braid as were senior non-commissioned officers' ranks, enlisted men's rank was indicated by white stars on their square collar flaps. Senior officers and flag officers would wear a broader gold braid line of 3.3 centimetres (1.3 in) and 5.3 centimetres (2.1 in) resp. beneath smaller lines, in addition flag officers would wear a crown on top of their sleeve insignia.
Unterleutnant was an officer of the armies of East Germany and other nations. The rank was first introduced in 1662-74 by France and was also adopted by some other countries' armed forces. In the East German National People's Army from 1956 to 1990, Unterleutnant was the lowest commissioned officer (CO) rank. It belonged to the rank group of lieutenants or subaltern officers. The equivalent rank of the Volksmarine was Unterleutnant zur See.
Stabsarzt, in English Staff Surgeon, is a military commissioned officer rank in German speaking armed forces. In the German Bundeswehr and the former Wehrmacht and Reichswehr, it describes a qualified or licensed surgeon or dentist who practises military medicine, with a rank equal to captain in the army and the air force or lieutenant in the navy. In the Austrian and Swiss armies, the rank is Hauptmann.
Oberarzt, literally meaning "senior physician," in English known as first lieutenant (Dr.), was a military commissioned officer rank in the Austro-Hungarian Common Army until 1918, and in the German Reichswehr and Wehrmacht until 1945.
Assitenzarzt was a military rank in the Austrian-Hungary Common Army until 1918 and in German Reichswehr and Wehrmacht until 1945.
Austria-Hungary 
Austro-Hungarian Navy 
