The buckle on the Australian slouch hat chin strap is normally worn on the left hand side, but soldiers at RMC (Royal Military College Duntroon) wear it on the right hand side. Why? Because a Duntroon major was shot at Galipolli, with his hat on backwards, thus making the buckle the wrong way around. As a dedication to him, all other RMC officers started to wear the hat the right way, but the buckle on the wrong side. The tradition has remained, and causes much confusion for soldiers unaware of it.
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Platoon Commander, 6 Platoon, B Company
10/27th Battalion
Royal South Australia Regiment
PRO PATRIA