First transmitted in 1977, this documentary follows three months in the life of the 1st Battalion of the Royal Green Jackets (also known as the Black Mafia) as they move from their Dover barracks for a tour of duty at the Tower of London. The Royal Green Jackets are light infantry, trained to move fast. Above all they are riflemen and take pride in their reputation of being thinking fighting soldiers.

• BBC
• Julian Pettifer