What is the primary use of DD Form 372?

The primary use of DD Form 372 is to serve as a verification of birth for individuals enlisting in the military. This form is crucial as it helps establish the identity and age of the applicant, which are essential criteria for eligibility in military service. Accurate birth verification ensures that all candidates meet the legal age requirements and allows the military to maintain accurate records of its personnel.

While the other options relate to important aspects of military enrollment and personnel management, they do not reflect the specific purpose of DD Form 372. For instance, a medical history report would detail an individual's health background, and tattoo screening involves assessing tattoos for compliance with military regulations. An enlistment application is a broader document that encompasses various aspects of the candidate's qualifications and intent to join the service, rather than specifically focusing on birth verification.