The South African support publically and privately were two different matters. South Africa had it's own political pressure to deal with. They helped as much as they dare ,even using Puma Helicopters and personnel on a Rhodesian raid into Mozambique.,unmarked off course.They even gave Rhodesia 8x T-55 tanks they captured in transit at sea.It was there as much as they could ,especially Fuel oil. ,spare parts and such.