Military Alphabet · Letter A
A in the Military Alphabet: Alpha
Code word, pronunciation, history, and how to use it when spelling out loud
In the military alphabet, the letter A is Alpha, pronounced AL-fah. It is the first code word of the NATO phonetic alphabet, the 26-word spelling system used by pilots, air traffic controllers, and military radio operators worldwide. In official ICAO and NATO documents the word is spelled Alfa, though English speakers almost always write Alpha.
The official ICAO spelling is Alfa — the F replaces the ph so that speakers of languages where 'ph' is not read as F still pronounce the word correctly.
Why "Alpha"?
Alpha is the first letter of the Greek alphabet, which made it a natural opener for a spelling alphabet: internationally recognized, two clean syllables, and already carrying the sense of 'first.' It met the selection criteria ICAO set in the late 1940s — a live word in English, French, and Spanish that airmen of any native language could pronounce and recognize, and one hard to mistake for any other code word on a noisy channel. The official spelling is Alfa because 'ph' is not pronounced as F in every language; writing it with an F guarantees the intended sound regardless of who is reading. Alfa appeared in ICAO's 1951 alphabet and passed the comprehension testing that forced several other letters to change before the final 1956 version.
A Across Spelling Alphabets
| Alphabet | Word for A |
|---|---|
| NATO/ICAO | Alpha |
| LAPD | Adam |
| Western Union | Adams |
| German (Classic) | Anton |
| German (DIN 5009:2022) | Aachen |
| French | Anatole |
| Spanish | Antonio |
| Italian | Ancona |
| Able Baker (WWII, historical) | Able |
| RAF 1924 (historical) | Ace |
British WWI signalese rendered A as 'Ack' — the origin of 'ack-ack' for anti-aircraft fire. The RAF's 1924 alphabet used Ace, and the WWII US-UK Able Baker alphabet used Able. Alfa took over when the current alphabet took effect on 1 March 1956.
Alpha in the Field
Alpha marks firsts and entry points across military and aviation usage. Checkpoint Alpha was the Allied checkpoint at Helmstedt-Marienborn, the western start of the transit route to Berlin — Checkpoints Bravo and Charlie continued the sequence, at the Berlin end of that autobahn and in the city center. In the military time-zone system, Alpha designates UTC+1. Pilots use the word daily without thinking about it: taxiway A is 'taxiway Alpha,' and a controller calls an aircraft registered N123AB as 'November one two three Alpha Bravo' rather than spelling raw letters.
"A as in Alpha" on the Phone
My surname is Avery — that's A as in Alpha, V as in Victor, E as in Echo, R as in Romeo, Y as in Yankee.
More on spelling out names and codes call-side in the phone spelling guide, and every letter's "as in" word is on the letters-as-words page. To convert whole words instantly, use the free military alphabet translator.
ONE TO REMEMBER
ICAO has officially spelled the word Alfa since the early 1950s, yet most English-language publications — and plenty of military materials — still print Alpha; it is one of two code words (Juliett is the other) whose official spelling English usage quietly ignores.
Frequently Asked Questions
What is A in the military alphabet?
A is Alpha (officially spelled Alfa), pronounced AL-fah. It is the first word of the NATO phonetic alphabet used in aviation, the military, and marine radio.
How do you pronounce Alpha?
AL-fah, with the stress on the first syllable. ICAO's published pronunciation guidance renders it AL FAH.
What was A before Alpha?
In WWII the US-UK Able Baker alphabet used Able; before that the RAF's 1924 alphabet used Ace, and British WWI signalese used Ack. Alfa replaced Able when the current alphabet took effect on 1 March 1956.
Why is it spelled Alfa instead of Alpha?
ICAO chose the F spelling so that speakers of languages in which 'ph' is not read as F would still pronounce the word correctly. Alfa is the official spelling in ICAO and NATO documents; Alpha is the common English spelling.
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