The NATO phonetic alphabet is useful to prevent spelling mistakes or miscommunication, especially when people from different countries with different accents and pronunciations work together. The NATO alphabet became effective in 1956 and, a few years later, turned into the established universal phonetic alphabet for all military, civilian and amateur radio communications. It assigns a word to each letter so that a letter's name begins with the letter itself.
Radio communications have moved on in terms of technical sophistication since then, but the alphabet is still in place in case of confusion, error or bad reception to make sure the correct message is transmitted, received and understood.
The phonetic alphabet used for confirming spelling and words is quite different and far more complicated to the phonetic alphabet used to confirm pronunciation and word sounds, used by used by linguists, speech therapists, and language teachers, etc.
By simply remembering this one principle, you can enjoy most of the benefits of the NATO alphabet, without much effort on your part. Furthermore, this principle is useful in locations where people use different types of phonetic alphabets, such as the LAPD radio alphabet, as most of these alphabets rely on the same principle.
If you decide you want to memorize the NATO phonetic alphabet, you can do it through a variety of methods, including by using handmade flashcards where you can also download the pronunciation of NATO phonetic Alphabets.