APersP-01 NATO codes for grades of military personnel

What it is

APersP-01 is the NATO Allied Personnel Publication that sets a single alphanumeric code for every military rank across the Alliance: OF-1 to OF-10 for officers, OR-1 to OR-9 for other ranks. It exists because more than thirty armed forces each use their own rank titles, and a NATO staff post, a personnel return or a multinational headquarters needs one scale everyone can read underneath all of that. It is covered by STANAG 2116, the ratified agreement through which NATO nations commit to using the code system; APersP-01 itself is the technical content, the code table, that the STANAG gives force to once a nation adopts it. Edition A Version 3 was promulgated in June 2022.

Who it addresses

Paragraph 1 states its purpose directly: the publication "details the NATO codes of military personnel ranks for use by nations when preparing personnel tables, requisitions, reports and returns destined for NATO nations, organizations and commands." That makes it a document for nations, not for industry: whoever within a defence ministry or armed force prepares establishment tables, strength returns or requisitions for a NATO posting. It never addresses a supplier, manufacturer or contractor, and it is careful to say so about its own reach in the other direction too: paragraph 2 states plainly that "nothing in this publication is to prejudice existing national grades designations or procedures in purely national establishments." A nation's own promotion and rank system is untouched; APersP-01 only supplies the shared label once someone crosses into a NATO context.

What the code actually covers

Paragraph 4 gives the two bands the rest of the document builds on: "Officers OF-1 - 10," with "General officer OF-6 to 10," "Senior officer OF-3 to 5" and "Junior officer OF-1 to 2" inside it, and "Other ranks OR-1 - 9." Paragraph 5 narrows the lower band further: "For NATO purposes, OR-5 to OR-9 inclusive are considered Non-Commissioned Officers." Paragraph 6 lists what the code is actually used to prepare: establishment tables, personnel statistics, strength returns, personnel requisitions and other personnel reports, "to include Automated Data Handling (ADH) reporting procedures." Paragraph 7 requires a requisition for a NATO post to "indicate the NATO code herein specified in conjunction with the approved manning document," and expects the post to be filled by someone holding that grade, though a person holding a different national rank is still expected to perform the post's duties.

The bulk of the publication, Annexes A through F, is not narrative at all: A to C give NATO codes for officer personnel in the Army, Navy and Air Force, and D to F do the same for non-officer personnel, each annex a nation-by-nation table followed by a notes section of footnoted national detail. We have not reproduced those tables here; what follows is what an auditor, or anyone reading a manning document, would actually need to know about how they vary. Every code rests on a nation's own domestic legislation, listed nation by nation in the publication's "National References" section, from Canada's National Defence Act to the United States' Title 10.

What a multinational manning document has to show

Paragraph 9 sets the one formatting rule that shows up outside the tables: in a document naming personnel of different nations or services, the grade is "preceded by the national distinguishing letters and one of the following abbreviations for the service concerned: (A) for Army, (M) for Marines, (N) for Navy, (AF) for Air Force, (CG) for Coast Guard and (SI) for Service Immaterial," so that, in the document's own example, "Belgian Army Colonel = BEL (A) OF-5." Paragraph 8 adds that precedence between personnel inside a NATO organisational or functional element follows the approved manning document for that element, not rank alone.

Where nations differ

Two things worth knowing before reading an annex table literally. First, the OF-1 to OF-10 and OR-1 to OR-9 bands are not universal even within one nation's own forces: several smaller nations record no equivalent against one or more codes, and a number of nations, including Bulgaria, the Czech Republic, Hungary, Montenegro and Slovakia, use a single rank structure across both Army and Air Force rather than separate ones. Second, at least one nation steps outside the stated floor: Latvia identifies its own Lieutenant rank "by the Code OF-0," a level below paragraph 4's OF-1 baseline, with nothing elsewhere in the text revising that baseline. The US Warrant Officer grades sit outside both bands too: the notes describe the Warrant Officer as "a separate and distinct category of officers in US Forces" whose "rank and precedence is below those of officer personnel, but above that of non-officer personnel," carried in its own W-1 to W-5 column rather than folded into OF or OR.

How it is checked

There is no accreditation, audit or certification scheme against APersP-01. It is a shared vocabulary, and paragraph 2's guarantee that it does not touch a nation's own grading procedures means nobody assesses a nation's promotion or rank-award system against it either; that runs under the nation's own law. In practice a code gets "checked" only administratively, when a NATO staff officer reading a manning document or return confirms the code shown matches the rank the annex tables record for that nation, not against any external scheme this publication creates.