In 2012, Kuol was a lieutenant general in the SPLA, the army of South Sudan.
On March 14, 2012, Kuol was put in charge of Operation Restore Peace, a disarmament program in Jonglei State.
[2] During the Heglig Crisis, Kuol was in favor of fighting the Sudanese Armed Forces if talks could not resolve the border dispute.
[3] Kuol was removed from active service in the SPLA and placed in reserve in January 2013.
[4] On December 18, 2018, President Salva Kiir Mayardit appointed Kuol as the principal of the SPLM political school, although it was unclear what the role of principal would entail.