The Operational Support Command Land (Dutch: Operationeel Ondersteuningscommando Land, OOCL) is a support command of the Royal Netherlands Army. The command consists of multiple combat support and combat service support units that provide the army with a broad variety of services.^[1] The OOCL was established in 2009, with the simultaneous disbandment of 1 Logistics Brigade (1 Logistieke Brigade) and 101 Combat Support Brigade (101 Gevechtssteunbrigade).

The Command & Control Support Command [nl] (Command & Control Ondersteuningscommando, C2OstCo), is based in Stroe and provides the army with all types of communications.^[2] The command consists of three signal companies and the Signals Service School:

• Command & Control Support Command
  • A; B and C Signal Company
  • Signals Service School

The Joint ISTAR Command (Joint ISTAR Commando, JISTARC) is based in 't Harde, and is tasked with collecting, analysing and sharing intelligence.^[3] The command consist of the following units:

• Joint ISTAR Command
  • Staff Squadron (Stafeskadron)
  • 102 Electronic Warfare Company (102 Elektronische Oorlogsvoering compagnie)
  • 104 JISTARC Reconnaissance Squadron (104 JISTARC Verkenningseskadron), with Fennek light armoured reconnaissance vehicles
  • 105 Field HUMINT Squadron (105 Field Humint-eskadron)
  • 106 Intelligence Squadron (106 Inlichtingeneskadron)
  • 107 Aerial Systems Battery (107 Aerial Systems Batterij), with RQ-11B DDL Raven, Q-27 ScanEagle, RQ-21A Integrator unmanned aerial vehicles^[4]
  • 108 Technical Exploitation Intelligence Company (108 Technical Exploitation Intelligence-compagnie)
  • 109 Open-source Intelligence Company (109 Open Sources Intelligence-compagnie)

The Fire Support Command (Vuursteun Commando, VustCo) is based in 't Harde, and is responsible for providing the Dutch armed forces with ground-based fire support.^[5] The command consists of the following units:

• Fire Support Command, in 't Harde^[6][7]
  • 11 Horse Artillery Battalion (11 Afdeling Rijdende Artillerie; being formed; will join the 43 Mechanised Brigade in 2025)^[7]
  • 41 Field Artillery Battalion (41 Afdeling Veldartillerie; will join the 13 Light Brigade in 2025)^[7]
    • Headquarters Battery (Stafbatterij)
    • A and B Battery, each with 9× Panzerhaubitze 2000 self-propelled howitzers
    • C Battery, with 16× MO-120-RT towed mortars (being re-equipped with 9× Panzerhaubitze 2000 and will join 11 Horse Artillery Battalion in 2025; MO-120-RT mortars will be transferred to 11 Air Assault Brigade)^[7]
    • D Battery, with 6× Panzerhaubitze 2000 self-propelled howitzers (will receive 3× additional Panzerhaubitze 2000 and join 11 Horse Artillery Battalion in 2025)^[7]
  • Fire Support School (Vuursteunschool)
  • Artillery Fire Range (Artillerieschietkamp)

The 1 Civil-Military Cooperation Command [nl] (1 Civiel en Militair Interactiecommando) is based in Apeldoorn, and is specialised in various forms of interactions between the army and non-military parties, such as local populations and NGOs.^[8] The command is specialisied in the following disciplines:

• 1 Civil-Military Cooperation Command
  • Culture and Education
  • Public governance
  • Infrastructure
  • Human Rights and Healthcare
  • Economy, Employment, Agriculture and Cattle
  • Development of Small Businesses

The Supply and Transport Command [nl] (Bevoorradings- en Transportcommando) is based in Stroe, and is tasked with the supply and transport for missions, exercises and foreign deployments.^[9] The command consist of the following units:

• Supply and Transport Command
  • Staff Company (Stafcompagnie)
  • 110 and 220 Transport Company (Transportcompagnie)
  • 130 and 230 Base Company (Clustercompagnie)
  • 140 Heavy Transport Company (140 Zwaar Transportcompagnie)
  • 210 Regional Transport Company (210 Regionale Vervoerscompagnie)
  • 240 Service Company (240 Dienstencompagnie)

The 101 Engineer Battalion [nl] (101 Geniebataljon) is based in Wezep, and is tasked with the construction and maintenance of military infrastructure such as roads, buildings and bridges.^[10] The battalion consists of the following units:

• 101 Engineer Battalion
  • 101 Staff Company (101 Stafcompagnie)
  • 102 and 103 Construction Company (Constructiecompagnieën)
  • 105 Hydraulic Engineer Company (105 Geniecompagnie Waterbouw)

The 400 Medical Battalion [nl] (400 Geneeskundig Bataljon) is based in Ermelo, and provides medical services to the Dutch armed forces.^[11] The battalion consists of the following units:

• 400 Medical Battalion
  • Staff and Support Company (Staff & Ondersteuningscompagnie)
  • 420; 421; 422 and 423 Hospital Company (Hospitaalcompagnie)

The Defence Explosive Ordnance Disposal Service [nl] (Explosieven Opruimingsdienst Defensie) is based in Soesterberg, and is responsible for land and maritime explosive ordnance disposal.^[12] The service consists of the following units:

• Defence Explosive Ordnance Disposal Service
  • Ground-based Company (Grondgebonden compagnie)
  • Maritime Company (Maritieme compagnie)
  • Research Institute (Kenniscentrum)
  • EOD School (EOD-school)

The Land Forces Command Staff Support Group (Ondersteuningsgroep CLAS) is based in Arnhem, and comprises various support and ceremonial units.^[13] The group consists of the following elements:

• Land Forces Command Staff Support Group
  • Royal Military Band "Johan Willem Friso" (Koninklijke Militaire Kapel "Johan Willem Friso)
  • Regimental Fanfare Garde Grenadiers en Jagers (Regimentsfanfare Garde Grenadiers en Jagers)
  • Mounted Units Regimental Fanfare (Regimentsfanfare Bereden Wapens)
  • National Reserve Korps Fanfare (Fanfare Korps Nationale Reserve)
  • Honorary Cavalry Escort (Cavalerie Ere Escorte)
  • Defense Geography Service (Dienst Geografie Defensie)
  • Military Penitentiary Center (Militair Penitentiair Centrum)(in Stroe)
  • Individual Transmission Office - Security Sector Reform (Bureau Individual Uitzendingen - Security Sector Reform)
  • Internal Security Service (Interne Dienstverlening)
  • Military Court (Militaire Rechtbank)