"Compulsory Military Training Scheme that was introduced in 1910, which was directly responsible for expanding the Citizens Forces by up to 50 percent in the
three years prior to the outbreak of World War I. Undoubtedly, the scheme proved to have numerous benefits, as many of these youths went on to serve in the
First AIF during World War I and the expanded organisation allowed citizens forces officers more experience in commanding formed bodies of men. However, it
was the main factors contributing to the decision to recruit the AIF on the basis of voluntary enlistment. Because the army in 1914 was largely made up of
young men aged between 19 and 21 who had been enlisted under this scheme, and due to the provisions of the Defence Act that precluded sending conscripts
overseas, upon the outbreak of the war it was necessary for the Australian government to raise a separate force, outside of the Citizens Forces organisation
for service overseas."