“…Military nurses are responsible for providing healthcare in hospitals during peacetime and in relief operations during natural disasters or epidemics [ 22 ]; thus, their competencies are more complex. The onion model, which is an enriched competency model with different interrelated layers, is frequently used to provide a comprehensive perspective for exploring competencies and designing multilevel training [ 23 , 24 ]. Based on the onion model, a competency model for military nurses in general hospitals was developed by our research team, covering four main categories: motive, traits, self-identity of dual roles, as well as knowledge, skills, and abilities [ 24 ].…”