The brigade was a part of regular army under the Bangladesh Armed Forces formed with the 4th, 9th and 10th Battalion of East Bengal Regiment.

Mosharraf was later selected as the Sector Commander of Sector-2 during Bangladesh Liberation War as he showed tremendous courage.

He was later asked to form a brigade as a regular force in order to establish effective control over the liberated zones that were liberated by the freedom fighters of Sector-02 and to operate large scale operations in Sector-2 against the Pakistan Army establishments.

[2] Considering the possibilities of a prolonged liberation movement, the Provisional Government of Bangladesh decided to a regular military force to continue the arms struggle for a longer period of time.

[3] The formation of K force was a reorganisation of the independence fighters of 4th East Bengal Regiment and the others who were trained for Bangladesh Liberation War under Sector-2.