I did. Thanks Lumutqueen.
Now the salute is fired. 2 X 21 shots. 21 for the Monarch and 21 to celebrate QEII herself.
The cannons are WWI era field pieces. - Such canons usually fired shrapnels and at a fairly close distance to the enemy, hence the armor plating.
A shrapnel is a type of grenade and if we should be correct not a fragment from a bomb or shell.
A shrapnel shell, contained hundreds of balls from lead and some distance from the canon the shell opened, releasing the balls that continued towards the enemy in the form of a widening cone of balls, wit terrible effect against masses of infantry - or in the colonies hordes of charging warriors.
Alternatively a shrapnel exploded in the air above the enemy sending the balls 360 degrees. But these were less effective and were usually fired by larger caliber artillery.
As the war progressed into trench warfare, such field pieces became less useful. The brisant, shrapnel and high-explosive shells they fired were simply too small to be effective on the battlefields of WWI.
One of the things the British army learned from the Battle of Somme, was that many of their artillery pieces were way to small to be effective and even worse around 10 % of the shells were duds, due to manufacturing errors.
The fly-over takes place now.
A commentator from the Guards Hussars here in DK, remarked that the air force is the youngest branch of the armed forces and here in DK, the army and the navy tease the air force by saying that where the army and navy have traditions, the air force only have habits.