Khan was appointed Second-in-Command in December 1943, and raised the 5th Guerrilla regiment at Bidadari in Singapore.

By then 4th Guerrilla regiment had been in that area waging guerrilla warfare for over five weeks.

After the revival of the INA in February 1943, the 3rd Guerrilla regiment came under the command of Col. Gulzara Singh and consisted of three infantry battalions.

By then, the 4th Guerrilla regiment had been in the area for over five weeks.

Meanwhile, the 1st battalion of the INA's 1st Guerrilla regiment, lightly armed, was directed to towards the south to participate in the diversionary attack.

The 4th Guerrilla regiment, which had reached Mandalay by the time the Imphal offensive was called off, was in the meantime ordered southwest to Myingyan, which it was tasked to defend.

The 2nd Guerrilla regiment, or the Gandhi Brigade under Col. Inayat Kiani, consisting of two infantry battalions.

The 3rd Guerrilla regiment, or the Azad Brigade under Col. Gulzara Singh, consisting of three battalions.

The 1st Guerrilla regiment, or the Subhas Brigade under Col. Shah Nawaz Khan, consisting of three infantry battalions.

The 1st Infantry Regiment, later to be merged with the 5th Guerrilla regiment to form the 2nd Infantry Regiment.