Lessons learned from casualty statistics in health care system development: Afghanistan 2008-2009.

A retrospective study of Afghanistan National Army casualty rates for a 1-year period was completed to assist in health care system assessment and further development during a period of rapid force expansion. Battle and disease nonbattle injuries by Corps area were determined from data on soldier visits from all military health care facilities. The number of fielded forces in each Corps was used to calculate the populations at risk.