Answer:
Conscription, also known as the draft, is a government policy of mandatory military service for its citizens. In other words, it is a system of compulsory enlistment of eligible citizens for military service.
During World War 1, many countries conscripted men into military service to help with the war effort. The specific groups that were conscripted varied from country to country, but generally, men between a certain age range were required to register for military service.
For example, in the United Kingdom, the Military Service Act of 1916 introduced conscription for men aged 18 to 41, with exemptions for certain professions and medical conditions. Similarly, in the United States, the Selective Service Act of 1917 required all men between the ages of 21 and 30 to register for military service, with later amendments expanding the age range and exemptions.
The age range for conscription varied in different countries, but it generally included men who were considered physically fit and capable of military service. Some countries also conscripted women, but their roles were typically limited to non-combat positions.
There were some groups of people who were exempted from conscription, such as those who were medically unfit for military service, certain professions that were deemed important for the war effort (such as farmers and factory workers), and some religious groups that had conscientious objection to war. However, the specific exemptions varied from country to country and changed over time during the war.