Critical Reasoning (CR) | Re: In World War I, only about 46 percent of the deaths suffered by the Un

In World War I, only about 46 percent of the deaths suffered by the United States Armed Services were classified as battle deaths, that is, as directly caused by enemy action. The remaining deaths suffered by the United States Armed Services were classified as due to other factors, mainly disease. In World War II, 72 percent of the deaths suffered by the United States Armed Services were classified as battle deaths.

Which of the following, if true, best helps to explain the change in the percentage
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