From the ©1963 Parker game:You are about to play the most unusual game that has appeared in many years. It is not difficult, but because it is so different you will find it worthwhile to read the rules completely through before starting play. No attempt has been made to teach strategy, as each player will develop his own as he becomes familiar with the game
The rules which follow are new and are the result of continuous research and testing. Parker Brothers believes that they tend to shorten the game, develop strategy sooner and make for better play

From the Palitoy 1970's version I have:In this classic game of military strategy, you battle to conquer the world. To win, you must launch daring attacks, defend yourself on all fronts and sweep across vast continents with boldness and cunning. But remember, the dangers, as well as the rewards, are high. Just when the world is within your grasp...your opponent might strike and take it all away!