This reference material is an introduction to grand strategy. It is subdivided into different parts, the contents of which could be expanded into books depending on how they fire the imagination of just one creative thinker.      A brief survey of strategic thought through the ages substitutes for an introduction. Parts of the book include facts, problems, issues, trends, and conflicting school of thought that were capsulized so that readers have immediate access to ideas. It is suggested that each reader weigh the pros and cons for himself and arrive at independent conclusions. He is then prepared to project tentative feelers into the strategic unknown.