Conscientious objector Henry Firth died in a work camp on Dartmoor, England, triggering a strike over living conditions.

A conscientious objector is an "individual who has claimed the right to refuse to perform military service" on the grounds of freedom of conscience or religion. The term has also been extended to objecting to working for the military–industrial complex due to a crisis of conscience. In some countries, conscientious objectors are assigned to an alternative civilian service as a substitute for conscription or military service.

Henry William Firth was a British conscientious objector during the First World War. He was a shoemaker and Methodist preacher who objected to serving in the war on account of his faith. Firth served a term of imprisonment in HM Prison Wormwood Scrubs after refusing to be conscripted into the British Army. After his release he was arrested and imprisoned a second time at HM Prison Maidstone. When he fell ill he agreed to carry out alternative war work so that he could leave the prison.