With their busy diaries full of duties, senior members of the Royal Family need a bunch of loyal aides who keep their schedules on track.
And among them is a lineup of equerries - service personnel drawn from the armed forces tasked with assisting their royal bosses while they are out and about on public duties.
They are often a familiar sight on royal engagements as they stay close to the principal, on hand to offer their help in any way they can.
