A system comprising a plurality of flying bodies (100, 200, 300) including a first flying body having an antenna (110, 112, 114) for forming a communication area by a beam irradiated toward the ground to provide wireless communication service for a user terminal in the communication area; and a control apparatus for controlling the plurality of flying bodies (100, 200, 300); wherein the control apparatus includes: a selection unit configured to select a flying body as a combination target to be combined with the first flying body from the plurality of flying bodies (100, 200, 300); and a flying body control unit configured to control combination of the first flying body and the flying body selected as the combination target; and wherein the plurality of flying bodies (100, 200, 300) includes a plurality of types of flying bodies (100, 200, 300); and the selection unit is configured to select the flying body as the combination target to be combined with the first flying body from the plurality of types of flying bodies (100, 200, 300), based on at least any of when a communication traffic of the wireless communication service provided by the first flying body exceeds a predetermined threshold value and when an airstream velocity in a flight area of the first flying body is greater than a predetermined threshold value, thereby increasing the communication capacity or providing a higher thrust force. a control apparatus for controlling the plurality of flying bodies (100, 200, 300); wherein the control apparatus includes: a selection unit configured to select a flying body as a combination target to be combined with the first flying body from the plurality of flying bodies (100, 200, 300); and a flying body control unit configured to control combination of the first flying body and the flying body selected as the combination target; and wherein the plurality of flying bodies (100, 200, 300) includes a plurality of types of flying bodies (100, 200, 300); and the selection unit is configured to select the flying body as the combination target to be combined with the first flying body from the plurality of types of flying bodies (100, 200, 300), based on at least any of when a communication traffic of the wireless communication service provided by the first flying body exceeds a predetermined threshold value and when an airstream velocity in a flight area of the first flying body is greater than a predetermined threshold value, thereby increasing the communication capacity or providing a higher thrust force. a selection unit configured to select a flying body as a combination target to be combined with the first flying body from the plurality of flying bodies (100, 200, 300); and a flying body control unit configured to control combination of the first flying body and the flying body selected as the combination target; and wherein the plurality of flying bodies (100, 200, 300) includes a plurality of types of flying bodies (100, 200, 300); and the selection unit is configured to select the flying body as the combination target to be combined with the first flying body from the plurality of types of flying bodies (100, 200, 300), based on at least any of when a communication traffic of the wireless communication service provided by the first flying body exceeds a predetermined threshold value and when an airstream velocity in a flight area of the first flying body is greater than a predetermined threshold value, thereby increasing the communication capacity or providing a higher thrust force.