This document provides a summary of the short story "The Man He Knew Too Much" by Alexander Baron. It introduces the main character, Private Quelch, who was a sincere and knowledgeable soldier training at a depot. There was a tough corporal named Turnbull who had seen action in Dunkirk. During a hand grenade training class led by Turnbull, Quelch displayed his knowledge, angering the corporal. In retaliation, Turnbull tossed a grenade to Quelch, marking a turning point where he was assigned to permanent cookhouse duties instead of advancing in his military career. Even in the cookhouse, Quelch continued showing off his knowledge, lecturing assistants on topics like potato peeling