Attached is a 1939 news report on the Nazi diplomatic efforts that were exercised in East African nation of Tanganyika:
"Black Nazis, the former German East Africa that Hitler is demanding, soft-pedals Aryan supremacy credo in propounding Nazi ideology, and capitalizes traditional use of the swastika by the natives as a symbol of fertility."
After World War I the parts that are today's Rwanda and Burundi became a League of Nations mandate governed by Belgium. The major part, however, came under British military rule and was transferred to Britain under the 1919 Treaty of Versailles.
- from Amazon: