Conflict Simulation Laboratory

Enabling high-resolution, data-driven conflict simulation
for US military, domestic, and international partners

Since 1974, the Conflict Simulation Laboratory (CSL) has provided state-of-the-art simulation and modeling tools, including the Joint Conflict and Tactical Simulation (JCATS) and the JCATS Low Overhead Driver (JLOD).

JCATS is a discrete event, constructive simulation that simulates effects-based, entity-level conflict scenarios. JCATS may be used stand alone or in federations using High Level Architecture (HLA) or Distributed Interactive Simulation (DIS) bridges.

How to get JCATS

JLOD is a multi-sided, white cell simulation tool that models force interactions on a global-level down to the individual entity. Together, JCATS and JLOD enable world-wide conflict simulation with high-fidelity simulation in targeted areas.

How to get JLOD


JCATS and JLOD are transitioning to operate on RHEL v8. Versions 17.1 and 9.1 respectively are the last versions to operate on RHEL v7. They will also operate on RHEL v8. Upcoming versions 18.0 and 10.0 will operate solely on RHEL v8.


  • 08–19 April 2024
  • JLVC IE 2
  • 15–19 April 2024
  • NATO M&S Integration Specialist Course
  • 07–09 May 2024
  • JCATS International Users Conference, Grafenwöhr, Germany
  • 03–14 June 2024
  • JLVC IE 3
  • 09–20 September 2024
  • JLVC IE 4
  • 04–15 November 2024

Latest Releases

  • JCATS v18.0 Feb 2024
  • JCATS v17.1.1 Jan 2023
  • JCATS v17.1.0 Feb 2023 
  • JLOD v10.0 Feb 2024
  • JLOD v9.1.1 Jan 2023
  • JLOD v9.1.0 Feb 2023

JCATS v17.0 & JLOD v9.0 and older are no longer supported

Upcoming Releases

  • JCATS v19.0
  • JLOD v11.0

Hardware and Netware Requirements


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