Taking note of these internal crises, General Antonio Vega, commander of the Cuban military mission in Namibia, proposes an invasion of South Africa itself. Bolstered by new shipments of Soviet arms, and troops from several other socialist African nations, Vega duly sends three tactical battle groups into the Transvaal. Having concentrated on the potential of a future Cuban attack on the Namibian front, South African intelligence agencies are taken by surprise. The SADF is also slow to mount an effective resistance due to its preoccupation with various revolts and the fact that a disproportionate amount of manpower and supplies are already committed to a major operation in Namibia.