Preparing to reconnoiter the enemy's position
Stereograph, "Preparing to Reconnoitor the Enemy's Position – Officers Entering the Cradle of a Captive Balloon," Keystone View Company, circa 1914-1918. Image features a group of soldiers gathered underneath a tethered observation balloon. Caption on verso describes the military uses of balloons and other aircraft during the war.
Typed caption: "18077 – Preparing to Reconnoiter the Enemy's Position – Officers Entering the Cradle of a Captive Balloon. Keystone View Company."