Soldier of Fortune magazine is a good starting point if you're interested in learning more about the various conflicts that occured in Africa during this time period. I want to say that they first starting publishing the magazine in early 1975 on a quarterly basis. Later they eventually went to a monthly publication format. Col. Robert K. Brown, the magazine's publisher, along with Jeff Cooper and others, made numerous trips to southern Africa to report on the situation there. One of the semi-regular contributors was A.J. Venter, who traveled extensively throughout the region (Rhodesia, South Africa, and adjacent AO's), and gave very detailed accounts of the anti-terrorist ops that the two countries engaged in.
I do remember one article in SOF that explained some of the strange oddities concerning captured terrorist weapons. One observation was that on many of the AK-47 and SKS rifles the bayonet was attached or else deployed for use. When questioned about this, the captured terrorists explained that this made the rifle shoot further and staighter because of the "magical power" of the bayonet (think of it as a really long spear).
Another unusual thing found on the weapons was that the rear sight was often found to be set at 1000 meters. Supposedly this was done to give the bullet more power and greater range to its intended target. If the 100 meter setting was good, consider how much more powerful the bullet would be at 1000 meters!
On some of the folding stock versions of the AK's many of the magazine base plates, as well as the curved horseshoe portion of the metal buttstock, were found to be seriously deformed and heavily scratched up. The explanation for this was more of a practical nature. It seemed that the terrorists frequently used their AK's as a sort of make-shift folding chair to sit on during breaks in the action. Extending the folding stock halfway down, along with the magazine, made for a temporary bipodal resting place for their hind quarters. As long as you had your folding stock AK with you, you would never be lacking for something to sit your tired rear end on.