The International Red Cross and Red Crescent Movement started in 1863, inspired by a Swiss businessman, Henry Dunant.
Browse photos and stories and search for your family's personnel cards to discover what 90,000 Red Cross volunteers did during the war.
In May 1919, the League of Red Cross Societies was formed and extended the role of national Red Cross societies to work in times of peace.
Find out more about our work in a changing world since 1945.
When war was declared in September 1939, the British Red Cross and the Order of St John joined forces and formed the Joint War Organisation.
The British Red Cross museum and archives contain a fascinating portrait of our humanitarian work, from our beginnings in 1870 to today.