What it is
What AJP-6 is, and who it is written for
AJP-6, Allied Joint Doctrine for Communication and Information Systems, is one of NATO's keystone doctrine publications: it "provides the cornerstone for communication and information systems (CIS) supporting Allied joint operations," in the document's own words. It is written primarily "as guidance for joint NATO commanders and staffs," not for industry, though the doctrine is also described as instructive for coalition operations and as a reference for civilian mission participants. Edition B, Version 1 (April 2024) is the current edition; it is effective upon receipt and supersedes Edition A, Version 1. It is "a keystone publication directly subordinated to AJP-01" (the capstone Allied Joint Doctrine), and sits alongside AJP-2, AJP-4, AJP-5 and, especially, AJP-10 and AJP-3.
How it binds
AJP-6 does not bind a company. It binds through ratification: nations record their agreement to use it in STANAG 2525 - "the agreement of nations to use this publication is recorded in STANAG 2525," as the Letter of Promulgation states. A supplier or contractor meets AJP-6 only when a NATO or coalition tasking, a support contract, or an assignment to a CIS function puts them inside the planning and employment structure the document describes; nothing in the text imposes a requirement on industry directly. A separate NATO document defining "non-NATO entities" (the term this doctrine uses for mission participants outside the Alliance) lists, among others, contractors on operations, exercises and transformational activities - but AJP-6 itself addresses the commands those contractors support, not the contractors.
CIS principles and characteristics
Chapter 1 sets out ten qualities communication and information systems should have to support command and control: capable, interoperable, agile, scalable, service-oriented, autonomous, timely, ready, secure, and resilient. Each carries a working definition. Agility, for example, is the ability to "respond dynamically to changes in scales of effort, operational tempo, posture, and outages," and resilience is tied to business continuity and disaster-recovery procedures "included in exercises as part of readiness" rather than left as a plan on paper.
Information assurance and CIS security
The document names five elements of information assurance - personnel, physical, information, CIS and industrial security - but only defines CIS security, built on the classic triad of confidentiality, integrity and availability, with authentication and non-repudiation as the by-products of combining them. CIS security measures are expected to produce standard log files that get aggregated and correlated to build a consistent, up to date picture of the cyberspace domain. Cryptography is treated as pervasive rather than exceptional: it is "used at all levels (i.e., from strategic to tactical, and in static and deployed) and for mostly all communication services," with key generation, distribution and dissemination named as part of the discipline.
Interoperability, in levels
AJP-6 separates interoperability into three technical aspects - syntactic, structural and semantic - and a four-level scale from Level 0 (not interoperable, forces operating independently) to Level 3 (integrated, common networks, capabilities, procedures and language). It is achieved through technical standards, operational or configuration procedures, and gateways, and the document is candid about a failure mode worth knowing: a manual "swivel chair" workaround, physically re-keying data between systems, can leave interoperability stuck at Level 0 even where the rest of a mission's technology is working fine.
Roles across strategic, operational and tactical command
Chapter 2 assigns responsibility by level. Strategically, the North Atlantic Council sets direction, the Consultation, Command and Control Board coordinates C3 policy, Allied Command Operations conducts operations under SACEUR, and the NATO Communications and Information Agency delivers C3 capability and CIS services under an Agency Supervisory Board. Operationally, the J6 staff leads CIS planning for the joint force commander, supported by the NATO Communication and Information Systems Group and, once deployed, a Deployable CIS Support Group. Tactically, each component commander manages the CIS under their own command and shares responsibility for the interoperability point with whichever formation they connect to.
Planning and employing CIS support
Chapter 3's planning cycle nests inside the wider operational planning process: mission analysis, orientation, the commander's planning guidance, concept development, plan development and plan review, producing a CIS estimate, information exchange requirements and a CIS support plan (SUPPLAN) or equivalent annex. CIS planning "should be based primarily on existing NATO CIS," turning to national or commercial assets only where NATO assets fall short. Chapter 4 then covers how CIS is actually employed: command facilities (static, deployable and mobile, across four communications tiers), exercises treated as full-CIS events, and the four stages of a deployment - pre-deployment, deployment, execution and drawdown - each with its own CIS activity. Annex A maps these stages directly against the planning phases of AJP-5 and the operations stages of AJP-3.
What this doctrine points to
AJP-6 is covered by STANAG 2525, the agreement nations ratify to use it. It is subordinated to AJP-01, nests inside the planning process of AJP-5, aligns with the operations stages of AJP-3, and names AJP-2, AJP-4 and AJP-10 among the keystone documents it relates to. A companion publication, AJP-6.1, was in development at the time of this edition to cover CIS service management and control in more depth. For interoperability and message-format detail it points to STANAG 5524 (NISP), STANAG 5525 (JC3IEDM), STANAG 7149 and APP-11 (the NATO Message Catalogue), and AAP-31 for CIS terminology. It also cites AJP-3.6, AJP-3.3, AJP-3.20 and AJP-10.1 for electronic warfare, air, cyberspace and information-operations interoperability respectively, and STANAG 2521, STANAG 4406, APP-15 and AAP-47 for supporting technical and procedural detail.
What auditors and assessors actually check
Nothing in AJP-6 sets up a certification or audit scheme for an organisation. The one certification process it names is technical, not organisational: "National CIS must comply with NATO standards and undergo a certification process before they can connect to NATO core services, regardless of security domain." That is a system-connection check run by NATO's own technical authority, and passing it is not the same as being "AJP-6 certified" - no such certification exists to hold. The closest thing to an assessment in practice is interoperability testing and validation before deployment, recorded in joining, membership and exit instructions (JMEIs) "for future reference and fault-finding."