Can anyone see the mistake in my last post?

[JuST Peter]

All you old soldiers should be able to spot it 

[Brock]

I cant see it, but then I wasnt a soldier. 5 Star camping for me...

[Scarlett Thunderbolt]

  My guess is that the wood duck in the right of the picture is marching to the beat of a different drum & is out of step with everyone else   

[Biggles]

  My guess is that the wood duck in the right of the picture is marching to the beat of a different drum & is out of step with everyone else   

Ah, but he's paying careful attention to the troop's stride so he can try to do a skip and join them.

[Kev Murphy]

That's because he is a goose, not a duck...

[JuST Peter]

  My guess is that the wood duck in the right of the picture is marching to the beat of a different drum & is out of step with everyone else   

My guess too. It had occurred to me that perhaps it was a requirement that the armed guards keep their inside feet close to the bearer, but my military mind agrees with you.