Sapper

A sapper, also called pioneer or combat engineer, is a combatant or soldier who performs a variety of military engineering duties, such as breaching fortifications, demolitions, bridge-building, laying or clearing minefields, preparing field defenses, and road and airfield construction and repair. They are also trained to serve as infantry personnel in defensive and offensive operations. A sapper's duties are devoted to tasks involving facilitating movement, defense and survival of allied forces and impeding those of enemies. The term "sapper" is used in the British Army and Commonwealth nations, the Polish Army and the U.S. military. The word "sapper" comes from the French word sapeur, itself being derived from the verb saper (to undermine, to dig under a wall or building to cause its collapse).

The sappers ("sapeurs") of the French Foreign Legion traditionally sport large beards, wear leather aprons and gloves in their ceremonial dress, and carry axes.