| Common military ranks | ||
|---|---|---|
| Officers | ||
| Navies1 | Armies and Air Forces |
Commonwealth Air Forces |
| Admiral of the Fleet |
Field Marshal | Marshal of the Air Force |
| Admiral | General | Air Marshal |
| Commodore | Brigadier | Air Commodore |
| Captain | Colonel | Group Captain |
| Commander | Lt. Colonel | Wing Commander |
| Lt. Commander | Major | Squadron Leader |
| Lieutenant | Captain | Flight Lieutenant |
| Sub-Lieutenant | Lieutenant | Flying Officer |
| Seamen, soldiers and airmen | ||
| Warrant Officer | Sergeant Major | Warrant Officer |
| Petty Officer | Sergeant | Sergeant |
| Leading Rate | Corporal | Corporal |
| Seaman | Private | Aircraftman |
| 1 in the English-speaking world | ||
Aircraftman (AC), or Aircraftwoman (ACW), is the lowest rank in the Royal Air Force and the air forces of several other Commonwealth countries.
Aircraftman ranks below Leading Aircraftman and has a NATO rank code of OR-1. It is presently a training rank only and no airmen in productive service hold this rank. Aircraftman do not wear any rank insignia.
The rank was introduced on the formation of the RAF in 1918, replacing the Royal Flying Corps rank of Air Mechanic 2nd Class. There used to be two grades: Aircraftman 1st Class (AC1) and Aircraftman 2nd Class (AC2; also colloquially known as an "AC plonk").
In the Royal New Zealand Air Force, the rank is known as "Aircraftsman", regardless of the person's sex, in line with Seaman in the Royal New Zealand Navy. The spelling "Aircraftsman", despite being seen even in official documents, is incorrect in the RAF.
In RAF slang, Aircraftmen are sometimes called "erks". The word "erk" is likely a phonetic spelling of an east-Londoner's pronunciation of the abbreviation, "airc".[citation needed]
| Ratings and Other Ranks of the |
|||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OR-1 | OR-2 | OR-3 | OR-4 | OR-5/OR-6 | OR-7 | OR-8 | OR-9 | ||||||
| Royal Navy: | AB | LH | PO | CPO | WO2 | WO1 | |||||||
| Royal Marines: | Mne | LCpl | Cpl | Sgt | CSgt | WO2 | WO1 | ||||||
| Army: | Pte | Pte | LCpl | Cpl | Sgt | SSgt / CSgt | WO2 | WO1 | |||||
| Royal Air Force: | AC | LAC - SAC - Jnr Tech | Cpl | Sgt | Chf Tech - Flt Sgt | WO / MAcr | |||||||
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