What is Amos’ assertion about true patriots related to?

The assertion regarding true patriots as it relates to joining the regiment emphasizes the idea that active participation in military service is a fundamental expression of loyalty and commitment to one's nation. By joining the regiment, individuals demonstrate their willingness to defend their country and contribute to its preservation and values, which are often seen as hallmarks of patriotism. This notion ties the definition of a true patriot closely to tangible actions, particularly those that involve risking one’s life in support of the nation’s cause, reinforcing the belief that patriotism is not merely about sentiment but rather about active engagement and sacrifice.

In contrast, the other options involve interpretations of patriotism that may not carry the same immediate and direct implication of action as joining the regiment does. Supporting the Confederacy, proving loyalty, and participating in politics can be significant in their own rights but do not encapsulate the physical and personal investment represented by military service.