Report on the energy expenditure of Infantry recruits in training Describes the need for a report on the energy needs of troops in training -- notes that there have been complaints in the press about sedentary soldiers being fed on the same scale as fighting troops. Gives the methods of investigation using a 'Douglas Bag' technique where the subject breathes into a bag and the air analyzed for its carben and oxygen content to determine the calorie expenditure. Gives the results of the investigation and the caloric needs of the recruit -- concludes that the allowance of food is at present not enough for the recruit to perform the expected work. c1918