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
 

ALERT NOTICE:

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.

Events

11-22 August 2025
     •  JLVC IE3

06-17 October 2025
     •  JLVC IE4

17-21 November 2025
     •  JLVC VE

08-12 December 2025
     •  JLVC OAT


Latest Releases

  • JCATS v19.0 Jan 2025

  • JLOD v11.0 Jan 2025

  • JLOD v11.0.1 Feb 2025

  • JLOD v11.0.2 Apr 2025

  • JLOD v11.0.3 Jul 2025

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


Upcoming Releases

CSL Logo
  • JCATS v19.0.1
  • JLOD v11.0.4
  • JCATS v20.0.0
  • JLOD v12.0.0

Hardware and Netware Requirements