Attacking the enemy in an ambush is a devastating advantage at war. Weapons that stayed undetected until their very strike revolutionized warfare. The caltrop brought down the cavalry when it made entire battlefields impassible. Being able to load and fire a rifle from a lying position made a huge difference in the course of warfare. The insidious land mine weakens every left over moral of the enemy’s Army. What if, in the future, the soldiers’ cover becomes invisibility?