Drinks consumed included those from Monster Beverage, based in Corona, Calif., and Red Bull, the most-popular energy drink in the U.S. by retail dollar share. Red Bull Energy Drink is a product of closely held Red Bull based in Fuschl am See, Austria.
Service members were also asked questions about their use of sleep medication, average number of hours spent sleeping, and work impairment.
Previous research has found that 200 milligrams of caffeine, the equivalent of one to two energy drinks, improved cognitive performance in the military population.
"Those who drank three or more drinks a day also were more likely to report sleep disruption related to stress and illness and were more likely to fall asleep during briefings or on guard duty," Toblin said in the report.
Service members in the National Guard and Reserves were significantly more likely to use energy drinks than their active duty counterparts.
No differences in energy drink consumptions were found related to having had an accident or making a mistake that affected the mission because of sleepiness, the study says.