I can understand the Aircrew not getting the marching thing - Standing up for a long period when you're used to being sat down, i appreciate must be quite difficult, but as much as i hated getting pulled in to prepare for parades a stand out moment for me involved exactly that. Following the (shambolic) USAF out onto the front at Weymouth for the 40th DDay parade, in front of all those veterans and halting as one to an outbreak of applause. All that effort paid off. Brought a tear to my eye.
Only the once though.