Which of the following is the smallest drill unit in Officer Training School?

The smallest drill unit in Officer Training School is identified as the element. An element consists of a small group of cadets that typically functions together during training exercises or drills. This unit structure enables focused instruction and cohesion among the cadets, facilitating effective learning and practice of fundamental skills.

In contrast, a flight is composed of multiple elements and serves a larger organizational role within the training environment. A unit generally refers to a broader organization that may encompass multiple flights or elements as part of its structure. A brigade is even larger, usually comprising several units or groups, and is not relevant when discussing the smallest unit of drill. Understanding the hierarchy of drill units helps clarify the organization and training dynamics at the Officer Training School.