In a new study in the U.S. Army Medical Department Journal, about 47 percent of runners in traditional running shoes reported injury over the course of a year compared to just 14 percent of runners in minimalist shoes.

Relationships Among Self-reported ... [US Army Med Dep J. 2012 Oct-Dec] - PubMed - NCBI

So why the F are minimalist shoes banned in the Army? Oh well, I wear them anyways.