What document serves as an official record for a service member’s training history?

The Electronic Training Jacket (ETJ) serves as the official record for a service member’s training history because it compiles and maintains a comprehensive record of all training courses completed, certifications obtained, and qualifications earned throughout a service member's career. This digital record allows for easy access and updates, ensuring that the information remains current and accurate.

The ETJ is crucial for tracking professional development and training progression, which is essential for personal evaluations, promotions, and career advancement opportunities. By having all pertinent training information in a single location, it streamlines processes for both service members and personnel specialists.

Other documents serve different purposes; for instance, the Military Duty Report pertains more to duty assignments and performance evaluations rather than training specifics. The Training and Readiness Manual outlines the policies and guidelines for training but does not serve as a personal record. The Enlisted Personnel File contains a broader set of documents related to a service member’s overall career, including evaluations, but does not focus exclusively on training history.