In 1947, it was allocated to the Pakistan Army, where it continues to exist as 5th Battalion The Frontier Force Regiment.

Their mission was to maintain order on the Punjab Frontier; a task they performed with great aplomb.

During the Second Afghan War of 1878-80, the regiment took part in the defence of Sherpur Cantonment and the Battle of Kandahar, while in 1897, it served in the Tirah Campaign.

[1][2]Subsequent to the reforms brought about in the Indian Army by Lord Kitchener in 1903, the regiment's designation was changed to 53rd Sikhs (Frontier Force).

In 1914, the regiment's class composition was four companies of Sikhs, two of Pathans, and one each of Punjabi Muslims and Dogras.

During the Second World War, 3/12 FF served with great distinction in the Italian East Africa, Sicily, Italy and Greece.