As concerns UK manuals, none that I can think of. Most well read UK officers would have been familiar with Kitson, Paget, and a few other of the usual suspects.
Also bear in mind, that Zimbabwe was more about integrating the rebels into the existing - if re-branded - Army. The Army did not need re-building. The man who commanded UK forces in Zimbabwe during the transition was Major General Ackland. I believe he is still with us.
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