During austere conditions when there is a large demand on healthcare services and the resources are limited for different reasons, there should be a special way of managing patients and victims in order to make the most benefit to the community. Trial of first come, first served will lead to losing most of the seriously injured patients because they will reach late if they reached a healthcare facility. In addition, day-today work protocols with full resources also are not the optimum to offer for the whole community during a major incident. Triage has been created and evolved in military medical services to face mass casualty with limited resources and then transferred to civilian life to deal with mass casualty incidents. Applying triage to patients created some interference with medical bioethics if those applied on individual bases, but if applied in the whole picture of state or country, we can understand its rations.