Hat worn as part of the cadet uniform. Covers should be removed when indoors. No need to capitalize.

evening study period

Also known as ESP.

For formal publications to external audiences, excluding alumni, use “evening study period” on first reference.

first class

The first class [noun] is the senior class. As a noun, it is two separate words. As an adjective, it is hyphenated.

The first-class [adjective] cadet was early to class.

Do not use numerals when referencing.

Four Pillars

The Citadel education begins with Four Pillars—character, academics, military, fitness—to develop leaders who are prepared to serve in all walks of life.