Complex sentence: On September 19,2010, in Kandahar, while clearing a path for United States Army Rangers, he took a wrong step into an IED along the road, resulting in the amputation of both his legs and one of his fingers.
Split into simpler sentences: On September 19,2010, while clearing a path for United States Army Rangers in Kandahar, he took a wrong step into an IED along the road. The explosion resulted in the amputation of both his legs and one of his fingers.