From GPS to Wristwatches: 20 Military Innovations You Probably Use Every Day

GPS began as a military navigation project designed to provide the U.S. armed forces with more accurate positioning than was possible with paper maps and older tools. The first NAVSTAR satellite was launched in 1978, and the system was eventually opened up for civilian use following a 1983 decision by President Ronald Reagan, after the tragedy of Korean Air Flight 007. Today, you use its successors every time your phone guides you to avoid traffic jams, a delivery app finds your address, or a smartwatch tracks your running route.

The origins of the Internet date back to ARPANET, a network created in 1969 by the Advanced Research Projects Agency (ARPA) that connected universities, defense contractors, and government researchers. Originally, its purpose was not social media or streaming; it was to share computing power and information in a resilient manner during the Cold War. Every email, video call, search, and online purchase you make owes something to this pioneering network supported by the defense sector.

Radar became a major military technology during World War II, as the armed forces needed more effective ways to detect aircraft and ships before they appeared in their direct line of sight. As early as 1938, the USS New York was equipped with radar capable of identifying aircraft from a distance of nearly 80 kilometers, and this technology became indispensable in naval warfare. Today, radar is used to track storms, monitor speed, guide aircraft, open automatic doors, and even measure the trajectory of a baseball pitch.

The microwave oven was developed as a result of radar research conducted during the war, not as a culinary experiment. Engineers working on magnetrons discovered that microwave energy could heat food, and the first commercial microwave oven appeared in 1947, although it took decades before the appliance became compact and affordable enough to become a staple in homes. Today, reheating leftovers in two minutes is one of the most common examples of military science serving everyday convenience.

Adhesive tape was invented for the military during World War II, after Vesta Stoudt, a factory worker, insisted on finding a stronger and simpler way to seal ammunition crates. This fabric-based, water-resistant tape proved useful far beyond packaging: soldiers used it to make repairs to their equipment and even to treat injuries in emergencies. After the war, it made its way into civilian life and became the indispensable DIY staple that we still keep today in drawers, garages, cars, and toolboxes.

Alexander Fleming discovered penicillin in 1928, but it was World War II that made it possible to turn this scientific breakthrough into a widely available medication. The U.S. military recognized its usefulness on the battlefield and helped mobilize research, pharmaceutical production, and clinical trials so that it could be produced on a large scale. This wartime momentum helped usher in the era of antibiotics, and penicillin is still used today to treat common bacterial infections such as strep throat, pneumonia, ear infections, and many others.

The modern blood bank developed rapidly because military medicine needed more effective ways to compensate for blood loss. World War I helped advance preservation and transfusion techniques, while World War II led to the development of organized donation programs and the use of blood products, such as dried plasma, for military medical care. Today, this same principle underpins emergency services, surgical procedures, cancer care, the management of complications during childbirth, and disaster response efforts.

The modern ambulance has its deep roots in the military, thanks to the work of Dominique-Jean Larrey, Napoleon’s chief surgeon. During the French Revolution and the Napoleonic Wars, Larrey developed “flying ambulances” to evacuate wounded soldiers from the battlefield more quickly and treat them based on the urgency of their condition rather than their rank. This idea helped shape emergency medical transport as we know it today, from battlefield evacuations to urban ambulances and emergency medical technician responses.

Canned foods originated as a solution to a military supply problem: how to feed troops during long campaigns without the food spoiling? In 1795, Napoleon’s government offered a reward for any reliable preservation method, and Nicolas Appert eventually developed a process involving sealing and heating food, which helped launch modern canning. Today, this same basic principle allows soups, beans, tuna, tomatoes, and emergency rations to be preserved for months or even years.

Freeze-dried foods have become increasingly important in the military, as soldiers needed meals that were lightweight, had a long shelf life, and tasted better than many of the older canned rations. Researchers with the U.S. Army in Natick, Massachusetts, worked on freeze-drying in the 1950s, and by the mid-1960s, the technique was already being used for mass production for military purposes. Today, this technology is found in camping meals, hiking food, instant ingredients, and snacks that retain their flavor and texture after rehydration.

Disposable sanitary pads were developed using medical materials used during the war. During World War I, Cellucotton was used in bandages because it was more absorbent and less expensive than cotton, and nurses began using it as menstrual protection. After the war, this same material was transformed into commercially available sanitary pads, revolutionizing menstrual care for millions of people.

Before World War I, many men still used pocket watches, but trench warfare made wristwatches much more practical. Soldiers needed quick and precise timing for infantry movements and artillery fire, and the U.S. Army Signal Corps tested and purchased wristwatches for military use. After the war, this practice spread to civilian fashion, and by the late 1920s, wristwatches were selling far better than pocket watches.

"Aviator" sunglasses were first developed to meet a practical need: to protect pilots from glare during the early days of aviation. In the 1930s, Colonel John Macready of the Army Air Corps collaborated with a company to develop sunglasses capable of reducing sunlight while remaining comfortable in the cockpit. The result proved useful far beyond aviation, and “aviator” sunglasses are now worn for driving, sports, outdoor work, and everyday use.

DEET was developed after World War II demonstrated just how much insects could harm troops in regions where diseases were widespread. In 1944, the War Department and the Department of Agriculture opened a research laboratory in Florida, where DEET was developed in 1946 and subsequently approved for public use in 1957. If you’ve ever used insect repellent while camping, gardening, or traveling, you’ve used a product that originated from military research into disease prevention.

The auto-injector was developed for soldiers who needed a quick way to administer antidotes after exposure to chemical weapons. During the Vietnam War, the military was looking for a pre-filled, spring-loaded device capable of rapidly administering medication under conditions of extreme stress. Civilian medicine adopted this principle for epinephrine autoinjectors, which allow people to treat life-threatening allergic reactions before emergency help arrives.

Portable two-way radios became indispensable during World War II, as soldiers needed mobile means of communication without relying on landlines. Early military models, such as the SCR-300 backpack radio and Motorola’s SCR-536 portable radio, helped define what would later be known as “walkie-talkies.” Their descendants are still used today by construction crews, event staff, hikers, first responders, schools, hotels, and families who need a reliable, short-range means of communication.

Night vision technology originated from the military’s efforts to conduct nighttime operations without relying solely on visible light. The first active infrared systems appeared during World War II, and subsequent generations improved image amplification and thermal detection for soldiers, pilots, and surveillance teams. Today, civilian versions are used in security cameras, search-and-rescue operations, wildlife observation, driver assistance, and certain areas of medical and industrial imaging.

Drones were military tools long before they became consumer gadgets. The first unmanned aerial systems were developed for reconnaissance, live-fire exercises, and later combat missions, and these advances helped drive the evolution of remote-control, stabilization, camera, and navigation technologies. Today, drones photograph weddings, inspect roofs, map farms, assist firefighters, monitor construction sites, and help creators capture images that once required the use of helicopters.

The origins of superglue date back to research conducted during World War II by chemist Harry Coover, who was working on cyanoacrylates with the goal of developing transparent plastic materials that could be used in military sights. The substance was initially set aside because it stuck to almost everything, but Coover and his team later revisited it and recognized its potential as a fast-setting adhesive. Today, cyanoacrylate glue is used for household repairs, manufacturing, hobbies, medical closures, and countless small repairs where strong adhesion is essential.

The Jeep made a name for itself as a rugged military vehicle during World War II, designed to tackle rough terrain, travel quickly, and be practical in the field. Its popularity after the war helped shape civilian off-road driving and influenced the design of subsequent utility vehicles. Its legacy can still be seen today in SUVs, recreational vehicles, and farm vehicles, as well as in the widespread belief that a personal vehicle can be both practical and suited for adventure.