From 1996 to 1998, Ngwenya was General Officer Commanding of the North West Command in Potchefstroom and from 1998 to the end of September 1999 Chief Director Force Preparation in the Army Office.
From 1996 to 1998, Ngwenya was the commanding officer of the North West Command in Potchefstroom and from 1998 until September 1999, he served as Chief Director Force Preparation in the Army Office.