The Art of War

Some of you know of this book, and who wrote it, but this thread isn't dedicated to Sun Tzu or something like that.

If you were to be realistic, in terms with numbers of soldiers in a country (so don't make Mayene have 3.5 million soldiers :)) , and the resources in that country, plus the relations with other countries, how would you organize the defences of your country, and remember, TG is coming up, so be prepared for a trolloc assault too. You can choose any country, and depending on what copuntry you choose, the scenario and difficulty will be different.