Dutch soldiers are training at the Muscatatuck Urban Warfare Training Center.
The 405-hectare complex, about 65 kilometers southeast of Indianapolis, is used by the U.S. Department of Defense to train U.S. and allied troops.
Three Dutch commandos were wounded in an unexplained shooting near their hotel in downtown Indianapolis.
Indianapolis, Indiana, police said the shooting happened around 3:30 p.m. on Aug. 27.
Police officers found three Dutch soldiers hit at the scene and were taken to a local hospital.