A computer program is described which is intended to provide real- time support for umpires conducting two-sided seminar wargames. The program is designed to operate on a microcomputer. The game is assumed to take place between players at the Battle Force or Fleet Commander level. The commander controls the movements and operations of battle groups, and in some cases task forces, at the theatre level. The group in each case will be those of the highest possible level that still maintains the unique detection capabilities of the individual group. The groups are represented either by a collection of point units (say a carrier escorted by several other platforms), or by an area (circular or rectangular) patrolled and/or screened by any type of platforms (submarines, aircraft, etc. ). The whole group moves on its track as one unit. The model presented performs the following analyses: a) plans the tracks for all groups according to the players specifications; b) controls the timing for status changes: courses, speeds, EMCON plans, etc. ; and c) investigates possible detection opportunities among all groups by checking intersections among all relevant opposing 'area groups' and/or ranges to the opponents detection systems.