Insignia
Helmet flashes were worn by the Union Defence Forces from the early 1900s until the early 1940s. The flash was worn on both sides of the Wolseley helmet and on the upturned left brim of the smasher hat. As helmets and smasher hats were superseded by berets during World War II, the system therefore lasted for only about twenty years, though some flashes were later adapted for wearing on berets.
The standard pattern flash, introduced in 1923, was rectangular, 75mm high and 50mm wide. Flashes of Permanent Force (PF) units displayed the branch colours, while those of Citizen Force (CF) units displayed a provincial colour at the top, the branch colour at the bottom, and unit colours in the centre.
The flash for the 'Q' Services Corps was red, white and blue as shown alongside.
Read more about this topic: Q Services Corps (South Africa)