The voice that unnerved thousands of Servicemen has the same effect on film stars , as Regimental Sergeant - Major Ronald Brittain , now retired , brings that stentorian bellow back into action at Ealing Studios , London , for the new production of ' The Night my Number Came Up ' . Shuddering stars are Bill Kerr ( centre ) and Alfie Bass ( right ) RSM Brittain , was the British Army ' s senior Regimental Sergeant Major before his retirement . 17 th November , 1954