Final answer:
An all-volunteer force is vital to the Army because it leads to a more dedicated and skilled military personnel, provides access to individuals with specialized skills, and aligns with democratic principles.
Step-by-step explanation:
An all-volunteer force is vital to the Army for several reasons. Firstly, it allows for a more dedicated and motivated military personnel. Volunteers join the army out of their own free will, which means they are often more committed to serving their country. Secondly, an all-volunteer force provides the opportunity to select individuals with specific skills and qualifications that are needed in the military. This allows the Army to have a diverse and specialized workforce. Lastly, an all-volunteer force ensures that military service remains a voluntary endeavor, which aligns with democratic principles and values.