Two Athenian generals, Nicias and Laches, are asked to advise on the education of young men, leading to a broader investigation into the nature of courage. Through cross-examination, Socrates reveals that these military leaders cannot consistently define the very virtue that defines their profession. The dialogue explores the relationship between endurance, knowledge, and fear, ultimately ending in a state of aporia or puzzlement. It serves as a reminder that practical experience does not always translate into theoretical understanding.