Breitenfeld is one of the Thirty Years War Quadrigames. This one appeared in Strategy & Tactics magazine #55, March/April 1976.
From the introduction:
The Thirty Years War game system is an operational simulation of warfare in Europe during the fist half of the seventeenth century. Each game in the system is based on one of the more significant and interesting battles of the period. The playing pieces represent the armies which took part in the battles, and the map represents the terrain over which those armies fought.
(Ok, so it doesn't give away any secrets...)
turn: 45 minutes
hex: 175 meters
strength point: 75-100 men
Leaders are represented by separate units.
The map has starting locations printed on the map for each unit. Terrain includes lane, marsh, road. town, forest, river, and crest.