Ridley was the only actor in the television series to serve in World War One and Two.
BBC Radio 4
BBC World Service
How did George Irvine and Jack Carrothers end up as mortal enemies?
A new memorial for sailors killed when their ship was torpedoed by a German U-boat.
Solving the mystery of Rudyard Kipling’s son.
The wreck of a World War One German U-boat is found off the coast of Norfolk.
Messages written by servicemen travelling to fight are published for the first time.
The story of a momentous year for Ireland in 1916.
Exhibition opens at Dublin's National Library.
A video and audio-rich collection of stories that depicts life on the home front.
The most dangerous position in the war?
615 were awarded for the conflict, a quarter posthumously.
How to find out what your family did in World War One.
Discover places across the UK and Ireland with a story to tell about WW1.
Programmes from the BBC archive covering World War 1.
Tough decisions to save or sacrifice lives.
Was it really a symbolic moment of peace in an otherwise devastatingly violent war?
All the resources you need if you're teaching or learning about the Great War.
Bringing together the sound archive collections of the Imperial War Museums and the BBC.
Drama serial tracking the fortunes of a group of characters on the home front.
Could World War One have been avoided?
World War One's influence on Tolkien's classic story.
The censorship of mail to keep bad news from those at home.
The African passenger ferry with a gunboat past.
The backbone to vast logistical operations of armies on both sides.
How did the war at sea cause starvation in Lebanon?
A battle that raged in Europe, Africa, the Middle East and Asia.
How great artists and thinkers responded to World War I in individual works of art.
Local stories of the war's impact on lives away from the battlefield.
A fresh perspective on life and death in the trenches during World War One.
An interactive drama about the women of WW1 who formed their own football teams.
How football played its part in World War One.