Casualty care in a radiological/nuclear event should proceed according to the basic principles outlined in the (MARCHE)2 sequence as described in JTS CBRN CPG Part I. However, there are some nuances to the application of (MARCHE)2 in a radiological/nuclear scenario that are outlined in each phase of casualty care in the following sections (highlighted in blue). It is important to note that irradiation or contamination plus trauma, also described as combined injury, adds complexity to casualty care. The (MARCHE)2 sequence integrates the assessment and response to both trauma and radiologic/nuclear casualties.