Second Investigation Department
Antrasis Operatyvinių Tarnybų Departamentas
Agency overview
Formed27 October 1918 (restored 1 June 1990)
JurisdictionMinistry of National Defence
HeadquartersJankiškių g. 50, LT-02300 Vilnius, Lithuania
Annual budgetClassified
Agency executive
  • Brig. gen. Remigijus Baltrėnas

The Second Investigation Department or AOTD (Lithuanian: Antrasis operatyvinių tarnybų departamentas) is a Lithuanian intelligence agency under the Ministry of National Defence. It conducts military intelligence as well as intelligence and counterintelligence in the areas of defense.[1]


The origins of the institution are in the Intelligence Unit established within the Lithuanian Armed Forces on 27 October 1918. In 1923, many intelligence activities were transferred to the Ministry of the Interior forming what later became State Security Department of Lithuania. Military and defense related intelligence stayed within the military command and after 1929 the service was reorganized and named the Second Unit.[2]

The department was reestablished in 1990 as Information Unit, later reorganized and renamed to Second Investigation Department in 1997.[2] Its early task was to gather intelligence on Soviet military units operating in the region.[3] Since Lithuania became a member of NATO, AOTD has cooperated closely with the NATO intelligence community.[3]

See also


  1. ^ "Second Investigation Department under MND". Ministry of National Defence Republic of Lithuania. Retrieved 2021-02-04.
  2. ^ a b "Lietuvos Respublikos antrasis operatyvinių tarnybų departamentas". Visuotinė lietuvių enciklopedija. Retrieved 2021-02-04.
  3. ^ a b "Savo atkūrimo trisdešimtmetį mini Lietuvos karinė žvalgyba". 15min. Retrieved 2021-02-04.