Has anyone come across anything published in Polish or English regarding Polish mercenaries involved in the Congo and Biafra during the 1960s? I know Zumbach wrote about his part in a memoir but I believe much was discredited at the time as being a "colourful" account of his exploits. Otherwise not much else?
Also keen to learn something further about Polish mercenaries fighting in Yemen aganist the communist insurgency during 1960s.
Any pointers to sources will be most welcome.