They leave a lasting impression on anyone who has visited them. The war graves of France and Belgium are an incredible sight.
But the work of the Commonwealth War Graves Commission isn't limited to just there. It looks after 23,000 locations in 153 different countries.
Kenny Toal was granted special access to the teams whose job it is to maintain the memorials. You can watch his full report here.
More than 1200 sunflowers are being put on display in a church garden in Stockton to commemorate the local people who died in World War One.
Kenny Toal joins 250 Leyton Orient fans on a trip to the Somme and visits the graves of three North East footballers who never came home.
The story of three North East footballers who played for Orient - and who died in the First World War - still remembered 100 years on