Nikola Ljubičić joined the Partisans at the start of the war in Yugoslavia in 1941. He served with distinction, courage and heroism in the face of death. During the war he was put in charge of numerous units, moving through the ranks of the Partisan army. Forty-one years after his first steps upon the battlefields of Yugoslavia, he retired from the Yugoslav People's Army as a four-star General of the Army and Minister of Defence.
In 1982 Nikola Ljubičić took up the position of President of the Presidency of Serbia. He remained in this position until 1984. From 1984 to 1989 he was a member of the Presidency of the Socialist Federal Republic of Yugoslavia.
There are a number of publications on his work such as the Total National Defence – Strategy for Peace (published in 1977 in numerous languages, including English, Arabic, Russian and Serbo-Croatian), and his own memoirs of World War II in the book "U Titovoj koloni" ("Marching with Tito"; published in 2006).