The Lancaster House Agreement negotiated in the United Kingdom in 1979 on the conflict in Rhodesia ushered in the independence of Zimbabwe.  In the same agreement was a provision for the formation of a new post-independence Army, the Zimbabwe National Army (ZNA).   The ZNA was established in 1980 after Zimbabwe gained its independence through the amalgamation of three distinct armed forces that are the Zimbabwe African National Liberation Army (ZANLA), the armed wing of ZANU led by Robert Mugabe, the Zimbabwe People’s Revolutionary Army (ZIPRA), the armed wing of ZAPU led by Joshua Nkomo, and the Rhodesian Army, formerly serving the white-minority government of Rhodesia.

The Joint High Command was formed in 1980 and played a crucial role in the formation of the Zimbabwe National Army (ZNA) by acting as a transitional body responsible for integrating ZANLA, ZIPRA, and the Rhodesian Army. It supervised the Lancaster House ceasefire, ensuring compliance through troop monitoring and disarmament, and spearheaded the unification of the three forces by establishing common training programs, rank structures, and command hierarchies. In essence, the Joint High Command provided the essential framework and leadership to transform three previously hostile forces into a cohesive national army, a process that would likely have been far more chaotic and violent without its guidance, potentially jeopardizing the stability of the newly independent Zimbabwe.

Complementing the integration process were parallel standardization training programmes run by the British Military Advisory and Training Team (BMATT) at different command levels for the forming ZNA.The BMATT focused on capacity building and professionalism within the military, helping to transition it from a liberation army to a structured national force, crucial for ensuring stability and defence in the country.The integration process, code named ‘Operation Sausage Machine’ was intricate, fraught with challenges stemming from ideological disparities, mutual distrust, and logistical complexities.

Lieutenant General George Peter Walls was assigned by the then Prime Minister of Zimbabwe, Cde RG Mugabe to supervise the forces integration process. His assignment was short-lived since he quickly fell out of the Prime Minister’s favour due to suspicions of complicity following several assassination attempts on the life of Cde RG Mugabe during the period leading up to independence.At its inception, the Zimbabwe National Army was organized into four brigades which collectively contained 29 battalions.By late-1980, a number of newly integrated ZNA units had been formed with Lieutenant General RS Mujuru as the first Commander ZNA.A fifth brigade was established in 1981, increasing the total number of battalions to 36.

When General Mujuru retired from the Army in 1992, General VMG Zvinavashe took over command. He was later appointed the first Commander Zimbabwe Defence Forces (CDF) on its establishment in 1994. General CGDN Chiwenga took over command of the ZNA. In 2004, General Zvinavashe retired from the ZDF. He was succeeded by General CG Chiwenga. Lieutenant General PV Sibanda took over command of the Army that same year.

Lieutenant General PV Sibanda commanded the ZNA from 2004 until 2018 when he was appointed Commander Defence Forces. His promotion to a full General and Commander Defence Forces followed the retirement of General CDGN Chiwenga who was then appointed Vice President of Zimbabwe and Minister of Defence and War Veterans Affairs. Lieutenant General EAC Chimonyo was then appointed the Commander ZNA as from March 2018.

Lieutenant General Chimonyo died on 08 July 2021 and Lieutenant General David Sigauke was subsequently appointed Commander on 30 July 2021.