It honestly depends on what you mean on "military cooperation," but the short answer is there isn't a lot on decolonizing African militaries overall for a number of reasons. It gets more fleshed out if you include the military arms of the liberation movements themselves 1/x https://twitter.com/rob_heinze/status/1191341960726011904

For example there is a good amount on PLAN and MK cooperating or the working with the Zimbabwean armed groups (which subsequently led to South Africa deploying the SAP to Rhodesia for a while), but on formal military cooperation among the Frontline States, not a lot. 2/x

Partially because as we laid out in our initial essay for the Journal, the access to the military archives or other sources is still severely constrained, even taking recency into account. However, some of that is finally coming out 3/x https://brill.com/view/journals/jamh/1/1-2/article-p3_3.xml

But sadly most is still in the "waiting to be published" phase, such as my own manuscript which I am finishing up right now on the Tanzanian military. Now, what I found in my own work is that is was rare for African state militaries to get directly involved with the struggles 4/x

As that would have given the colonizers/settler states an excuse to bring their own more developed military into action against the Frontline States. So what you generally had was quiet military-guerrilla cooperation in Tanzania, Zambia, and a few others 5/x

HOWEVER, one of the strokes of genius that the Tanzanians had was that what their military could provide was the necessary logistical support to keep the liberation struggles going. While Russia/China/Yugoslavia/whoever could get guns, bullets, tents, boots, ets. to Africa 6/x

Usually into port at Dar es Salaam, that materiel then had to make its way to points well beyond, including Angola. So the TPDF formed what they called the Special Duty Unit, which was essentially a logistics regiment that set up a series of relays across the continent 7/x

Including timetables for transit, condition of roads, vehicle maintenance, and load capacity so that they could effectively transport tons of goods across the continent in a matter of days. However, when some loads passed beyond TZ they needed to hand it off to Zambian forces 8/x

And so they actually developed some pretty intensive mil-mil cooperation ability with Zambia including helping develop some of their military education structures. They would later also do the same in Mozambique to foster a regular military and stable ally there 9/x

But really basically the majority of military cooperation work I've found has been working together to serve as the support services for the numerous liberation fronts who were actually fighting... and the book should be done soon! 10/x

The only other thing I can think of is that the OAU-Liberation Committee did try to form an overall military advisors board with each country supplying some professional officers to create an overall military structure, but it doesn't look like it went anywhere really. 11/x

So yeah, I guess the overall data point is "it depends- there is some work and more coming, but that is all I have right now" Thanks to @LesothoJohn for tagging me in and hopefully this might be some help! 12/12