What 1975 McDonald's innovation introduced a drive-through window for military customers?

McDonald's opened its first Drive-Thru in 1975 at a restaurant in Sierra Vista, Arizona.

The location was near Fort Huachuca, and the drive-through was created partly to serve military personnel who could not leave their vehicles while wearing fatigues. Customers could order and collect food through a window, extending McDonald's convenience beyond counter service and helping establish a format that later became central to the brand.

Drive-through service changed the visual and operational identity of McDonald's restaurants. It required dedicated vehicle lanes, menu boards, ordering procedures, and pickup windows. As car travel and suburban development shaped eating habits, the format became an important competitive advantage.

The innovation is often confused with the restaurant's broader “fast food” system or with later digital ordering lanes. The first McDonald's Drive-Thru dates to 1975, and its early military connection is associated with the Sierra Vista, Arizona, location.