Final answer:
Bounding overwatch is the tactical movement used when cover is available and there is a need for an increased speed of movement, balancing rapid advancement with security from enemy fire.
Step-by-step explanation:
The type of individual movement that is used when cover/concealment is available and a greater speed of movement is necessary is called bounding overwatch (also known as leapfrogging or alternate bounds). This tactic involves individuals or fire teams moving in turns so one person moves while the other covers. When there's a need for speed but also a requirement for maintained security, a soldier will move quickly from one position of cover to the next while teammates provide overwatch to suppress potential threats. The key is to balance the need for rapid movement with the necessity of not being exposed to enemy fire.