The premier said that he was against the involvement of armed forces in the foreign war from the very first day, while addressing defense day ceremony at the GHQ.
Families of martyrs, members of the federal cabinet, heads of political parties, lawmakers and celebrities were also among the attendees at the ceremony.
The Pakistani nation celebrated the day to pay tribute to its martyrs on the 53rd anniversary of the 1965 war.
On this day, 53 years ago, Indian forces had crossed the international border in the darkness of night to attack Pakistan, but the nation foiled the nefarious designs of the enemy.
PM Imran said that Pakistan Army is the only intact and functional institution of the country.
"The Pakistan army is running at its best because of non-political interference and its priority for merit," he said. "Political interference destroys institutions."
The premier said that he still remembers the 1965 war and acknowledged the passion of the nation during the wartimes.
He said that the country's foreign policy will be for the betterment of the nation under his command.