There's not a great deal that can be said about this one. It is a simulation of the final collapse of Hitler's Thousand Year Reich.
The player controls the German forces and has to dry to delay the inevitable end for as long as possible.
The map, which is one screen large, shows Germany and some of the surrounding countries, with various terrain features - cities, mountains, fortifications etc marked on.
The allies, controlled by the computer, outnumber the German units considerably, and the only real option open to the player is to use the peculiarities of the game system to bog the enemy down for as long as possible. There is no scope for any sort of grand strategy or any tactical finesse, it's just sheer bloody slog.
The Allies win the game by capturing Berlin. The Germans don't win the game, so all you can do is lose, later.
Unless the accident of fortune isolates an allied unit so that you can attack it with as little risk as possible, you would be well advised not to do any attacking at all, which makes for rather a boring game, especially since most of the time you won't be able to move any units because they'll be pinned down by the enemy.