[1] At 16, Vardi enlisted into the Haganah serving as a battalion commander of the Givati Brigade during the 1947–1949 Palestine war.

During the Sinai War, Vardi served as the Deputy Commander of the Reserve Division.

[citation needed] During the Six-Day War, Vardi served the Jerusalem District Commander.

[5] Following the recommendations of the Shamgar Commission, which assessed the bodies responsible for the safety and welfare of the Prime Minister, Vardi was appointed head of staff of monitoring and control in charge of implementing the new security measures designed to improve the security and efficiency.

[6] In 1999, Prime Minister Ehud Barak appointed Vardi to investigate the functioning of the Broadcasting Authority.

They had a daughter (Yael), and two sons: Tal Vardi, who served as an officer in the IDF Paratroopers reconnaissance unit; and Michael Vardi (Hebrew: מיכאל ורדי), who served as an officer in the Armored Corps in the Yom Kippur War;[8] where he was killed in a battle.