Analysis of information sources in references of the Wikipedia article "Fusilier" in English language version.
This distinction was granted in 1902, when by Army Order 57 it was directed that the Royal Dublin Fusiliers should wear a blue and green hackle in their busbies: that for the officers to be blue and green, eight inches long, and that for the non-commissioned officers and men a similar but shorter one, in recognition of their services during the war in South Africa. In explanation of the colours of the hackle it may be stated that blue is the distinguishing colour of the 1st Battalion ('Blue Caps'), and green that of the 2nd Battalion ('Old Toughs').
