![](http://www.alamy.com/thumbs/6/A461DA9B-898F-4F85-B3A6-92CA5AA7F5C1/2RC19H4.jpg)
Student officers at Fortress Monroe, Virginia, are seen participating in a training exercise in the observation of fire. The instructor demonstrates how to produce smoke-puffs chemically by pressing a bulb and moving a Pantograph. This photo was taken on April 18, 1918, and was censored and released by the censor on July 31, 1918.
Size: 9177px × 6297px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ..., 1, 18, 1918, activities, american, april, army, battlefield, bulb, camp, censorship, chemical, class, communication, corps, documentation, education, equipment, exercises, fire, fortress, fox, historical, history, instruction, instructor, lieutenant, military, monroe, observation, officers, pantograph, photographic, photographs, photography, production, science, signal, signals, skills, smoke, smoke-puffs, soldiers, strategy, stud, student, tactics, technology, training, virginia, visual, war, warfare, wn., world