It's a bit of a twist on a century-long tradition. Check out Princess Patricia's Canadian Light Infantry drumline as they go dark and give a special black light performance for the regiment's 100-year anniversary. 

Hungry for more on the PPCLI's storied century?

CBC Television will air a special, hour-long documentary on the Princess Pats on Saturday, September 6 at 7pm MT.

You can also see our interactive web feature on the defining moments in the regiment's history.