In The Managerial Revolution I failed to give enough attention to this phase of the revolution. I continue to believe, as I stated in that book, that under the complex socio-economic conditions of modern civilization a stable ruling class made up almost entirely of soldiers, as were many ruling classes under more primitive conditions, cannot develop. The ruling class in our age must include those able to direct the intricate social forces of our day, and this the soldiers cannot do, except perhaps during some brief period of crisis.