The MoD's armed police force guard all defence locations in the UK and abroad.

BBC: Questions raised over MoD police cuts in Wiltshire

An Army band and an Air Force honor guard also will take part in the service.

CNN: Goldwater's Body To Be Cremated; Funeral Set For Wednesday

The Pope, who is turning 81 this month, looked frail as he arrived in Athens on Friday morning for the 24-hour visit, descending the steps of his plane slowly but unaided to be greeted by a Greek Air Force honour guard.

CNN: Pope moves to heal ancient rift