 In addition to those already mentioned, they were the Union Buildings (Pretoria), the head offices of the four provincial administrations, the supreme courts, certain magistrates' courts, customs houses, and three buildings in Durban (the general post office, the railway station, and the local military district headquarters).Under these arrangements, the Union Jack was subordinate to the National Flag.As the two flags had to be the same size, it meant that the Union Jack was made in the ratio 2