What it is
ALP-4.6.1 is NATO's tactical-level doctrine for the Joint Logistic Support Group (JLSG), the task-organised, deployable logistics headquarters and subordinate units a Joint Task Force (JTF) stands up to run theatre-level logistics for an operation: reception, staging and onward movement (RSOM), rearward movement, staging and dispatch (RMSD), and 3rd line supply, medical and engineering support. It builds on the doctrine one level up, AJP-4 (Allied Joint Doctrine for Logistics) and AJP-4.6 (Allied Joint Doctrine for the Joint Logistic Support Group), and works those principles down into a standardised structure, staffing model, deployment sequence and command arrangement.
This is guidance for NATO commanders and their staffs, agreed among nations rather than a document any company signs. Nations record their agreement to use it in STANAG 6535, and it applies wherever a JTF stands up a JLSG, from a single major operation to several smaller operations run at once, not to one territory or jurisdiction. Where the document mentions contractors, host nations or commercial resources, it is describing coordination points the JLSG staff has to manage, contractor support to operations and host-nation support arrangements, not requirements it places on those parties directly.
The JLSG is not the Standing JLSG
The document draws this distinction early and it is the one readers most often blur. The JLSG is mission-tailored and tactical, stood up per operation. The Standing Joint Logistic Support Group (SJLSG) headquarters is permanent, under SACEUR's operational command, and works at the operational level across the whole SACEUR area of responsibility, coordinating and overseeing strategic deployment rather than executing RSOM and 3rd line logistics itself. A JLSG runs on a mix of peacetime and crisis-establishment staff and is scaled to its own logistic network; the SJLSG scales from a smaller operation up to a major one plus, on NATO territory.
Structure, staff branches and subordinate units
A JLSG comprises a headquarters and subordinate units, built from a core staff element (drawn from the parent headquarters' peacetime establishment) augmented by NATO Command Structure, NATO Force Structure and troop-contributing-nation personnel. The headquarters runs to a Command Group, an Advisory Group, a liaison branch, a Chief of Staff group covering communications and information systems, information management, personnel and real life support, a plans branch, a supply and services branch, the joint logistic operations centre, movement and transportation, host-nation support and civil-military cooperation branches, a medical branch, a military engineering branch, a purchase and contracts branch, and an intelligence section. Subordinate units are described by capability rather than headcount, and the figures are concrete: a field warehousing company able to store up to 9,000 tonnes of supplies and issue 3,000 tonnes daily, a bulk fuel installation storing at least 1,800 m³ with fuel-quality control to STANAG 3149 and couplings to STANAG 3756, an ammunition company holding 2,400 tonnes of class V supply, a water team producing up to 400 m³ of potable water a day, and Role 2 enhanced or Role 3 medical treatment facilities sized by surgical throughput and nursed-bed capacity.
Command authorities are layered, and the terms matter
Commander JLSG holds five distinct authorities, and the document is explicit that the commander "shall not command any area", only assigned units. Operational control lets the commander direct subordinate units to accomplish specific missions. Tactical control applies to units passing through RSOM/RMSD. Coordinating Authority lets the commander require consultation between agencies but not compel agreement. Logistic Control lets the commander synchronise and prioritise assigned logistics units' functions, but explicitly does not confer authority over a national support element's own nationally-owned resources unless a transfer of authority says so. Direct liaison authority lets the commander intercommunicate directly with other task force elements. A national support element's assets stay under national control by default.
Building and running a headquarters takes years, not weeks
Logistic planning for a JLSG has to begin at least 24 months before a nation's stand-by phase starts, because building a functioning core staff element and augmenting it to a full headquarters (around 77 peacetime positions at each joint force command, roughly 25 for a NATO Force Structure headquarters, up to about 112 once fully augmented) runs through individual training, collective training, and a certification exercise before it is ready. Once deployed, the headquarters runs on a defined battle rhythm of boards and meetings, feeds a Recognised Logistic Picture owned by the JTF, and produces a fixed set of reports: a daily situation report and logistics situation report, weekly logistics and medical assessments, daily personnel, CIS and engineering reports, and incident-driven casualty reporting.
What it does not cover
ALP-4.6.1 does not set requirements for a company, a product, or a commercial logistics service. It is doctrine for how a NATO-assigned military headquarters organises, staffs, trains and commands itself. Where a contractor's own work touches a JLSG, through contractor support to operations or a host-nation support arrangement, what applies to that contractor is whatever the specific contract or technical arrangement says, not this document.