12-15. A full-dress rehearsal produces the most detailed understanding of the operation. It includes every participating Soldier and system. Leaders conduct the rehearsal on terrain similar to the area of operations, initially under good light conditions, and then in limited visibility. Leaders repeat small-unit actions until units execute them to standard. A full-dress rehearsal helps Soldiers clearly understand what commanders expect of them. It helps them gain confidence in their ability to accomplish the mission. Supporting elements, such as aviation crews, meet and rehearse with Soldiers to synchronize the operation.