What it is
STANAG 2506 is a NATO Standardization Agreement, currently Edition 4, promulgated 8 September 2022. It is not itself a doctrine manual. It is the agreement by which NATO nations commit to implement AJP-4.4, Allied joint doctrine for movement, Edition C. The movement terms, processes and common framework a reader usually wants sit inside AJP-4.4, not inside this two-page agreement. Read on its own, STANAG 2506 requires almost nothing of a supplier directly - its obligations run to nations, and it reaches a contractor only indirectly, once a nation has implemented it and an operation order, tasking or contract invokes the doctrine beneath it.
Who it binds, and how
STANAG 2506 is explicit that ratification and implementation are national acts. The letter of promulgation describes the agreement as one "which has been ratified by member nations, as reflected in the NATO Standardization Document Database (NSDD)." Nations that have not yet reported their position are invited to "advise the NSO of their intention regarding its ratification and implementation," and once a nation has implemented it, "Allies shall provide implementation details through the electronic reporting tool." So "is STANAG 2506 mandatory" has no single answer: it depends on whether a given nation has ratified and implemented it, and, for a supplier, on whether a specific operation or contract then calls up AJP-4.4. The agreement is "effective upon receipt for use by the participating nations and NATO bodies" once that has happened.
Who the doctrine is written for
STANAG 2506 says the doctrine it covers "is intended primarily for strategic and operational level headquarters involved in operations," and is also instructive for coalition, partner and non-NATO nations, and NATO and non-NATO civilian actors. That is a description of readership, not a compliance population: the document names no supplier, manufacturer or accreditation body.
What the agreement actually commits nations to
Under "Agreement," participating nations agree to implement AJP-4.4, Edition C. The STANAG's own "Implementation of the agreement" section adds that because AJP-4.4's content is now focused on operational-level movement matters, implementing three sibling doctrines alongside it is "very much recommended in order to obtain comprehensive picture of the movements and movement support network in NATO operations": STANAG 2182 (AJP-4, logistics), STANAG 2532 (AJP-3.13, deployment and redeployment of forces) and STANAG 2230 (AJP-4.6, the Joint Logistic Support Group). Nations and NATO bodies must report their implementation through NATO's electronic reporting tool; partner nations are invited to do the same.
Why "transportation" left the title
The current edition's own text explains that "it was decided to remove transportation from the title because it is an enabling capability alongside mobility, infrastructure, movements control and other supporting factors." The content did not shrink to match: transportation "stays the content and is fully described along with other enabling capabilities." A reader who remembers this STANAG under a title that included transportation is remembering an earlier edition's title, not a change in scope.
What it does not cover
STANAG 2506 names no test method, no severity level and no assessment scheme of its own, because it is a doctrine agreement rather than a technical or quality specification. Its only stated check is that the STANAG itself "is to be reviewed in accordance with AAP-03," a periodic review of the agreement's own currency, recorded in the NSDD, not an audit of any organisation. Two NATO Military Committee policy documents, MC 0319 (logistics) and MC 0336 (movement and transportation), are named as "other related documents" rather than part of the agreement itself; neither is in our catalogue.