Final answer:
The related references do not provide information on the specific age for cardio screening in the military, instead focusing on age eligibility for compulsory military service and draft registration, which generally ranges from eighteen to forty-five years old.
Step-by-step explanation:
The question regarding at what age Soldiers require cardio screening does not directly relate to any specific armed forces health policy publicly available. Therefore, based on the provided references, we are unable to give a direct answer in two lines about the specific age for cardio screening in the military.
The references discuss various aspects of military conscription laws, such as the Military Service Act and the Selective Service System, which include age criteria for eligibility for compulsory military service or draft registration, not medical screening. For instance, the first reference indicates that all males between eighteen and forty-five were eligible for compulsory military service, with exceptions for various circumstances. Understanding these elements can offer insight into military service requirements and societal roles, but it does not inform the age for cardio screening.