The paragraph that begins "That was nineteen-seventeen..." and ends "..who couldn't get into the army at all" implies that there were many different ways to contribute to the war effort during World War I, not just by serving in the military. The speaker mentions several examples of people who were unable to join the army due to various reasons, such as being too old or having a physical disability. However, these individuals found other ways to support the war effort, such as working in factories or volunteering as nurses. The paragraph suggests that everyone had a role to play in the war effort, and that even those who were not able to serve in the military could still make a meaningful contribution to the cause.