Captain Lieutenant or Captain-Lieutenant is a military rank, used in the Russian Navy, previously the Red Fleet/Soviet Navy and Imperial Russian Navy, in the German Navy or Finnish Navy,in the Brazilian Navy and formerly in the British army. In Russian and other East-European navies it is the most senior junior officer rank (equivalent to Captain in the Army/Ground Forces). The rank is also used in other countries, such as Brazil and Portugal. In many countries, a Captain Lieutenant is equal to a Commonwealth or US naval lieutenant, but this varies. The NATO rank code is OF-2.