The Phonetic Alphabet was devised by NATO (North Atlantic Treaty Organization) in the mid 1950s. it was based on earlier systems in use by the British and American Armed Forces. Approved by aviation and telecommunication bodies it is in widespread use in the English speaking world. Similar systems are used by speakers of other languages. Amateur radio users have devised other systems based on it as well.
Here they are:
Alpha, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliet, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whisky, X-ray, Yankee, Zulu.
If you are contemplating a career in aviation or tourism you should memorize them.