Oberstleutnant

Oberstleutnant is a senior field-grade officer rank used in the armed forces of German-speaking countries, including Germany, Austria, and Switzerland. The rank sits above Major and below Oberst, and in the NATO ranking system corresponds to OF-4. The English-language equivalent is lieutenant colonel.

In contemporary armed forces, officers at this rank typically command a battalion in the army or air force, or hold senior staff positions at brigade or division levels. They may also serve as deputies to an Oberst in larger formations or as heads of staff sections in areas such as operations, plans, or personnel. Career paths often include staff assignments at higher headquarters and advisory roles within a regiment, brigade, or division.

Historical context: The rank Oberstleutnant has existed in German-speaking military traditions since the 19th century, continuing through the German Empire, the Wehrmacht, and into modern armed forces. While the exact role and insignia have changed with organizational reforms, the rank has consistently represented a senior leadership level between major and colonel.

Insignia and terminology: Insignia for Oberstleutnant vary by country and era. In many German-speaking forces, the rank is indicated by distinctive insignia on shoulder boards or collars, commonly reflecting its position as a two-step rank above major and just below oberst. The title is always translated as lieutenant colonel in English.