SAPPER LEADER COURSE

In the U.S. Army, Sappers are combat engineers or other personnel who support the front-line infantry, and they have fought in every war in American history. A sapper may perform any of a variety of combat engineering duties. Such tasks typically include bridge-building, laying or clearing minefields, demolitions, field defenses as well as building, road and airfield construction and repair.

 http://www.goarmy.com/soldier-life/being-a-soldier/ongoing-training/specialized-schools/sapper-leader-course.html