Ost is a 1986 board game published by Les Elfes.

Gameplay Ost is a game in which a two-player medieval miniature wargame has armies maneuver on randomized terrain, issue and modify orders through leaders, and resolve simultaneous combat with rules for morale, unit types, and victory points.https://boardgamegeek.com/boardgame/98749/ost

Reviews Casus Belli #32https://archive.org/details/casus-belli-032/page/n23/mode/2up #40https://archive.org/details/jeux-et-strategie-40/page/16/mode/2up

References