The Army Reserve is an important part of the United Kingdom's defence system. It is made up of people who do not work for the Army full time, but volunteer to serve in the Army to help protect the United Kingdom. Anyone over the age of 18 can become an Army Reservist by signing up and attending training. The Army Reserved do duties such as helping in disasters or wars, providing security for important events, and providing help to their communities. The Army Reserve also works with regular soldiers to help them do their jobs better.