The Battle of Cassinga, Cassinga Raid or Kassinga Massacre was a controversial South African airborne attack on a South West Africa People's Organization (SWAPO) base (or refugee camp) located at (15°7′3.72″S16°5′11.04″E) at the former town of Cassinga, Angola on 4 May 1978. Conducted as one of the three major actions of Operation Reindeer during the South African Border War, it was the South African Army’s first major air assault.