In the North Atlantic Treaty Organization (NATO) phonetic alphabet what does the letter H stand for?

The International Radiotelephony Spelling Alphabet, commonly known as the North Atlantic Treaty Organization phonetic alphabet, NATO spelling alphabet or ICAO phonetic alphabet is the most widely used of all of the radiotelephone spelling alphabets.

In 1956, NATO modified the then-current set of code words used by the International Civil Aviation Organization (ICAO); this modification then became the international standard when it was accepted by the ICAO that year and by the International Telecommunication Union (ITU) a few years later.

It's accessible to speakers of French and Spanish in addition to English.

Spelling alphabets are often inaccurately called "phonetic alphabets", but they do not indicate phonetics and cannot function as phonetic transcription systems like the International Phonetic Alphabet.

The 26 code words are as follows: Alfa, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu.

Strict adherence to the prescribed spellings—including the apparently misspelled "Alfa" and "Juliett"—is required in order to avoid the problems of confusion that the code is designed to overcome.