A facility or environment designed for surgical procedures.

The context in which military operations are conducted.

वो संदर्भ जिसमें सैन्य अभियान किए जाते हैं

English Usage: The troops were briefed about the operational theatre before the mission.

Hindi Usage: मिशन से पहले सैनिकों को ऑपरेशनल थिएटर के बारे में जानकारी दी गई।