| Letter | 1913 | 1927 | 1938 | World War II | 1957-Present |
| A | Able | Affirmative | Afirm | Afirm (Able) | Alfa |
| B | Boy | Baker | Baker | Baker | Bravo |
| C | Cast | Cast | Cast | Charlie | Charlie |
| D | Dog | Dog | Dog | Dog | Delta |
| E | Easy | Easy | Easy | Easy | Echo |
| F | Fox | Fox | Fox | Fox | Foxtrot |
| G | George | George | George | George | Golf |
| H | Have | Hypo | Hypo | How | Hotel |
| I | Item | Interrogatory | Int | Int (Item) | India |
| J | Jig | Jig | Jig | Jig | Juliett |
| K | King | King | King | King | Kilo |
| L | Love | Love | Love | Love | Lima |
| M | Mike | Mike | Mike | Mike | Mike |
| N | Nan | Negative | Negat | Negat (Nan) | November |
| O | Oboe | Option | Option | Option (Oboe) | Oscar |
| P | Pup | Preparatory | Prep | Prep (Peter) | Papa |
| Q | Quack | Quack | Queen | Queen | Quebec |
| R | Rush | Roger | Roger | Roger | Romeo |
| S | Sail | Sail | Sail | Sugar | Sierra |
| T | Tare | Tare | Tare | Tare | Tango |
| U | Unit | Unit | Unit | Uncle | Uniform |
| V | Vice | Vice | Victor | Victor | Victor |
| W | Watch | William | William | William | Whiskey |
| X | X-ray | X-ray | X-ray | X-ray | X-ray |
| Y | Yoke | Yoke | Yoke | Yoke | Yankee |
| Z | Zed | Zed | Zed | Zebra | Zulu |
Tags: Reference








