Which of the following is NOT one of the three training domains?

The focus on training domains within military contexts typically encompasses three main domains: institutional, operational, and self-development.

The institutional domain centers on structured learning environments, such as schools and training centers where soldiers receive formal education and skills development. This domain provides foundational knowledge and technical skills essential for effective military performance.

Self-development refers to the individual's initiative to pursue personal and professional growth through self-directed learning opportunities, such as online courses, reading, and other resources. This domain emphasizes the importance of lifelong learning and personal responsibility in enhancing one's military capabilities.

The operational domain is where learning is applied in real-world scenarios, typically during actual missions or exercises. It emphasizes the execution of learned skills in a practical setting, reinforcing the importance of experience in the training process.

Field-based training, while important, does not represent one of the established training domains recognized in military doctrine. Instead, it is often considered a component of the operational domain, where practical skills learned in institutional settings can be applied in the field. Therefore, identifying field-based training as a separate training domain is not accurate, leading to the conclusion that it is not one of the recognized three training domains.