These days, when a plane sets off to drop bombs on a target, all the pilot needs to do is punch the coordinates into their Global Positioning System and follow the steering cues on the heads-up display — pretty straightforward. In fact, GPS has become so enmeshed in the military that the Air Force ran some training on how to fight without it.
But back in World War II, such technology didn't exist. They used only the classic navigational tools: a map, a compass, and some intuition.
Today's navigators have GPS and a host of other technologies that make getting from Point A to Point B easy.
(U.S. Air Force photo illustration by Tech. Sgt. Anthony Nelson Jr.)
So, how did they figure out their position using just a map and a compass in the cramped quarters of an airplane? The answer is old-fashioned hard work and diligent training.
Back then, navigators undertook about 500 hours of ground instruction. Assuming they had ten hours of classes per day, five days a week, that amounts to ten weeks spent on the ground. Then, they did another another 100 hours of training in the air. At the end, they needed to be able to plot a route with a course error no greater than 11 degrees, being no more than one minute off per hour of flight time. They also had to get within fifteen miles of an objective during a night flight.
This 1946 photo shows the level of technology available to World War II air crews. Much of it was done with maps, a compass, radar (if the plane was really advanced), and a fair bit of guesswork.
During World War II, some new navigation technology, like radio beacons, helped navigators bring their planes home. Over 50,000 personnel were trained to navigate aircraft to the precision requirements mentioned above.
Check out the video blow to see some of what would-be navigators were taught about maps and compasses.