concealment
n.n. the act of hiding something so that other people cannot see or find it. In the military, it often refers to hiding a vehicle or person to avoid being seen by the enemy.
n. the act of hiding or keeping something secret from view or knowledge. In a military context, it refers to the deliberate use of camouflage or other methods to prevent detection by an adversary.
The soldiers used natural camouflage for the concealment of their position.
Effective concealment is essential for a sniper to remain undetected while waiting for the target to appear.
The success of the operation depended entirely on the concealment of the supply line, which had to remain hidden from both aerial reconnaissance and ground patrols.
From Old French concelement (“concealment, secrecy”). By surface analysis, conceal + -ment.