When it was founded, its officers were predominantly Russian, having been sourced from the Soviet secret services like the NKGB, the NKVD, and SMERSH.
In November 1956, the GZI KdsBP separated from Committee for Public Security, and returned to its previous role, becoming again the Main Directorate of Information of Ministry of National Defense.
After the reform instituted by Władysław Gomułka in 1956, and the role GZI played in repressions and executions, one year later in 1957 the Main Directorate of Information of Ministry of National Defense was dismantled and replaced by Wojskowa Służba Wewnętrzna (WSW; English: Military Internal Service).
The agency created by the merger became known as Zarząd II Wywiadu i Kontrwywiadu (English: 2nd Directorate for Intelligence and Counter-intelligence).
The organization structure was accepted by minister of national defence General Flolrian Siwicki, but at the same time, the Polish military and political establishment wasn't happy about the huge size of 2nd Directorate.
When the agency was founded it was responsible for the: The GZI was originally organised into eight Oddział (English: Branches), which were supported and overseen by the "Office of Strategic Supplies" and the commendatory.