Final answer:
The purpose of this annual SIPRNET refresher training is to ensure that all MEDCOM SIPRNET users are aware of their responsibilities for the protection of classified data and systems in accordance with applicable Army regulations and MEDCOM policy on SIPRNET Security Procedures.
Step-by-step explanation:
The subject of this question is Computers and Technology. The question pertains to the annual SIPRNET refresher training, which involves the protection of classified data and systems. This training ensures that all MEDCOM SIPRNET users are aware of their responsibilities for safeguarding sensitive information.