What procedure must service members follow to obtain disability status due to war?

A service member must obtain a decision from the Military Medical Commission (MMC) linking the injury or illness to military service and a decision from the assessment of a person's daily functioning (formerly MSEC) confirming the disability group (I, II or III). The application package also includes a commander’s certificate describing the circumstances of injury or illness. The Ministry of Defence formalises the decision and issues the certificate.