|Flag of Royal Western Australian Regiment, 28th Battalion|
The flag of 28th Battalion is A defaced ensign.
The Queen's Colour uses the UJ in the canton as an almost identical replica of the British Queen's Colour. A gold-edged circle fills the center of the St. George Cross. Inside the circle is the regiment's name. Enclosed in the circle is the battalion number. Normally the battalion number is in Roman numerals, but XXVIII would not fit aesthetically so it is rendered in arabic numerals. The Regimental Colour, on the other hand, has the Roman numeral in the canton. The circle is surmounted by a Crown. The Regimental Colour contains eleven battle honour scrolls (South Africa, and ten selected honours from WWI). The Queen's Colour contains ten selected battle honour scrolls from WWII. These are arranged at the bottom of the flag.