[Lee Stewart]

The first McDonald's Drive Thru was installed in a restaurant based in Sierra Vista, Arizona, located near the Fort Huachuca military installation. Military rules forbade the soldiers from wearing their military uniforms in public, and they weren't about to change into civilian clothes just to grab a burger and run back to base, so restaurant manager David Rich came up with a solution: cut a hole into the wall and allow members of the military to pick up their orders without stepping out of their car. The convenience and simplicity of the idea quickly caught on.