There were some old farts in there...though you could be right. They clearly were not accustomed to drilling with each other as a unit.
There were likely vets marching. They might get together at their local Royal Canadian Legion hall every week, but they only march once a year, at the Remembrance Day ceremonies. Now, most of the vets are from ‘peacekeeping missions’. Of course there are some younger ones who served in Afghanistan and certain other ME hotspots.