Was thinking about “red line” and movies and found a Sargent Keck in the plot summary for The Thin Red Line

“During the battle, a squad led by Sergeant Keck hides behind a knoll safe from enemy fire to wait for reinforcements. Keck reaches for a grenade but accidentally pulls the pin and is killed by the resultant blast. Lieutenant Colonel Tall orders the company commander, Captain James Staros, to take the bunker by frontal assault, at whatever cost.”

Kek!

https://en.m.wikipedia.org/wiki/The_Thin_Red_Line_(1998_film)