 On 8 – 9 July 1960 , the soldiers were invited to appoint black officers , and ' command of the army passed securely into the hands of former sergeants , ' as the soldiers in general chose the most @-@ educated and highest @-@ ranked Congolese army soldiers as their new officers . Most of the Belgian officers were retained as advisors to the new Congolese hierarchy , and calm returned to the two main garrisons at Leopoldville and Thysville . The Force Publique was renamed the Armée nationale congolaise ( ANC ) , or Congolese National Armed Forces . However , in Katanga Belgian officers resisted the Africanisation of the army . 
