The ratio of stress casualties to battle casualties varies with the intensity of the fighting, but with intense fighting it can be as high as 1:1. In low-level conflicts it can drop to 1:10 (or less).

In World War I, shell shock was considered a psychiatric illness resulting from injury to the nerves during combat. The horrors of trench warfare meant that about 10% of the fighting soldiers were killed (compared to 4.5% during World War II) and the total proportion of troops who became casualties (killed or wounded) was 56%. Whether a shell-shock sufferer was considered "wounded" or "sick" depended on the circumstances. The large proportion of World War I veterans in the European population meant that the symptoms were common to the culture, although it may not have become popularly known in the United States.

This site was developed to provide basic information for service members, their families and the general community to raise the overall level of awareness so people know where and how to find help to help our nation's service members make a successful transition back into civilian life after experiencing combat. This is a mission where failure simply is not an option.

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