Scratches, first aid [1510]
Search lights, trench warfare [1193]
Seeing at night [1094]
Semaphore signaling [863]
Semi-blindness [1512]
Sentinel's orders [1716]
Sentinels, respect for [1517]
Sentries firing at night [1104]
Separated officers and others placing themselves under order of nearest higher commander [390]; [391]
Sergeant of the guard [1642]