British soldier Lord Horatio Herbert Kitchener featured in an army recruitment poster in 1915
Men queuing outside the headquarters of the Royal Army Service Corps to join up on the eve of conscription in 1939 at the start of World War II. All photos: Getty Images
A newspaper boy with a poster calling for the conscription of all 20-year-old men in 1939
Members of Britain's No Conscription League parade in protest of the government's compulsory conscription bill in 1939
Newspaper placards in London announce the conscription of all men aged 20 and 21 into the army in 1939
A man studying newspaper notices about conscription in 1939 at the outbreak of World War II
A group of married men on their conscription into the British Army in 1916
Crowds of the British public gather to watch delegates arrive at a Compulsion Debate in 1916
British soldier Lord Horatio Herbert Kitchener featured in an army recruitment poster in 1915
Men queuing outside the headquarters of the Royal Army Service Corps to join up on the eve of conscription in 1939 at the start of World War II. All photos: Getty Images
A newspaper boy with a poster calling for the conscription of all 20-year-old men in 1939
Members of Britain's No Conscription League parade in protest of the government's compulsory conscription bill in 1939
Newspaper placards in London announce the conscription of all men aged 20 and 21 into the army in 1939
A man studying newspaper notices about conscription in 1939 at the outbreak of World War II
A group of married men on their conscription into the British Army in 1916
Crowds of the British public gather to watch delegates arrive at a Compulsion Debate in 1916
British soldier Lord Horatio Herbert Kitchener featured in an army recruitment poster in 1915