"Tactics." . . . . "The service of security and information"@en . "The service of security and information" . . "The Service of security and information" . . . . . . . . . . . . . . . . . . . . . . . . . . . "The service of security & information"@en . . . . . . . . . "The Service of Security and Information"@en . . . . . . . . . . . . . . "Service of security and information"@en . . . . . . "Service of security & information; officially adopted by the War department as a manual of instruction"@en . . . "Guard duty." . . . . "Military reconnaissance." . . "Military art and science." . . "Military intelligence." . .