Four years ago there were more listed phone boxes in England than war memorials.
Now Historic England has finished a project to list 2,500 of them, 516 of which are in the East of England.
They tell moving stories of those who served and sacrificed during The Great War.
There was an official policy not to return the bodies of fallen soldiers so these memorials often became the main focus of grief for families and communities.
They include the story of the oldest man to fight in WW1. He signed up to serve alongside his four sons but died just two months later.
The project was in partnership with War Memorials Trust, IWM, Civic Voice, volunteers and school children. It aims to better understand the important local landmarks and protect them for the future.
“The First World War was a period of unprecedented loss for families across the country and after the Armistice communities sought to commemorate their fathers, sons, and brothers who sadly never returned. "It is right that 100 years on we have protected these poignant memorials and continue to remember those who paid the ultimate sacrifice"