👉 A cadet is a young person who has not yet reached the age of majority, which is typically considered to be 18 years old in most countries. They are often referred to as "young men" or "young women," and they may be enrolled in school for a period of time before joining military service. Cadets are typically assigned to a specific unit within their school, such as the National Guard, the Air Force, or the Navy, and receive training and education that prepares them