Victory Day observances, celebration of the Indo-Bangla allied victory over Pakistan armed forces and the Liberation of Bangladesh. (Bangladesh and India[a])

Victory Day is a national holiday in Bangladesh celebrated on 16 December to commemorate the defeat of the Pakistan Armed Forces in the Bangladesh Liberation War in 1971 and the Independence of Bangladesh. It commemorates the Pakistani Instrument of Surrender, wherein the commander of the Pakistani Forces, General A. A. K. Niazi, surrendered to Lieutenant General Jagjit Singh Aurora, Joint Commander of Indian and Bangladesh Forces, ending the nine-month Bangladesh Liberation War and 1971 Bangladesh genocide and marking the official secession of East Pakistan to become the new state of Bangladesh.

The Pakistan Armed Forces are the military forces of Pakistan. It is the world's sixth-largest military measured by active military personnel and consists of three uniformed services—the Army, Navy, and the Air Force, which are backed by several paramilitary forces such as the National Guard and the Civil Armed Forces. A critical component to the armed forces' structure is the Strategic Plans Division Force, which is responsible for the maintenance and safeguarding of Pakistan's tactical and strategic nuclear weapons stockpile and assets. The president of Pakistan is the commander-in-chief of the Pakistan Armed Forces and the chain of command is organized under the Chairman of the Joint Chiefs of Staff Committee (JCSC) alongside the respective chiefs of staff of the Army, Navy, and Air Force. All branches are systemically coordinated during joint operations and missions under the Joint Staff Headquarters (JSHQ).

Bangladesh, officially the People's Republic of Bangladesh, is a country in South Asia. It is the eighth-most populous country in the world and among the most densely populated with a population of over 171 million within an area of 148,460 square kilometres (57,320 sq mi). Bangladesh shares land borders with India to the north, west, and east, and Myanmar to the southeast. It has a coastline along the Bay of Bengal to its south and is separated from Bhutan and Nepal by the Siliguri Corridor, and from China by the Indian state of Sikkim to its north. Dhaka, the capital and largest city, is the nation's political, financial, and cultural centre. Chittagong is the second-largest city and the busiest port of the country.