Stabskapitän
Stabskapitän, in the cavalry also Stabsrittmeister, or Kapitänleutnant , was a historic military rank in the Prussian Army. In reference to the German Stabskapitän the equivalent rank in the Imperial Russian Army used to be the rank Stabs-kapitan.
It ranked between the Premierleutnant and Hauptmann/Rittmeister in the Prussian army, and between poruchik and captain in the Russian army. Its holder represented the actual captain and company commander in his absence, frequently and often for long periods, should his Hauptmann show no interest in leading the company, though the Hauptmann would retain his rank, status and uniform.
In the army of Frederick the Great, a regiment's regimentschef, oberst, staff officers, company commanders and those of nearby rank received a far higher rank than the staff captains who actually led the company. From this difference later developed the salary difference between a first class "Hauptleute first class" and "Hauptleute second class".
Finland
A similar rank, was Stabskapten, or Alikapteeni in the Military of the Grand Duchy of Finland, using the Russian rank system. Currently the corresponding rank in the Finnish Army is yliluutnantti.Russian Empire
Shtabs-kapitan was in the Russian Imperial Army until 1917 a light captain rank who was in charge of a company-size military unit.| junior rank: Poruchik | Shtabs-kapitan | senior rank: Kapitan |
junior rank: Starshy leytenant | Shtabs-kapitan | senior rank: Kapitan |