Final answer:
The UCMJ and 10 U.S.C. 937 require the explanation of certain articles to an enlisted member at enlistment, after six months of active duty or upon completion of basic or recruit training for Reserve members, and at reenlistment.
Step-by-step explanation:
The Uniform Code of Military Justice (UCMJ) and 10 U.S.C. 937 stipulate that certain articles must be explained to each enlisted member at specific intervals during their service. These articles, which govern conduct and outline legal obligations and rights, need to be reviewed with members at the time of enlistment, after they have completed six months of active duty. For members of a Reserve component, this briefing takes place after they have completed their basic or recruit training. Additionally, the explanation of these articles is also required at the time the member reenlists. This ensures that all service members are adequately informed about the UCMJ and its implications for their military service.