Where is all individual and collective training in units documented?

The Digital Training Management System is the correct answer because it serves as an online platform that encompasses all individual and collective training documentation in units. This system allows for efficient tracking, managing, and reporting of training activities and is designed specifically to enhance training management processes.

Utilizing the Digital Training Management System ensures that all training records are accessible and up-to-date, facilitating compliance with training requirements and improving overall unit readiness. This system also supports the documentation of both individual trainees and collective training events, thereby providing a comprehensive overview of a unit's training status.

The other options, while related to training management, do not provide the same level of broad documentation capabilities as the Digital Training Management System. The Training Management System is a more general term and may refer to various systems but lacks the specificity of being a digital platform. The Daily Training Management Sheet is typically a more localized tool used for daily or immediate training tracking rather than comprehensive documentation. The Unit Training Record, while a valuable reference for maintaining a unit's training history, is generally considered a static record and may not reflect real-time updates or all training activities as effectively as the Digital Training Management System does.