OFFICE OF SCIENTIFIC RESEARCH AND DEVELOPMENT 5I 



whom he had to deal rather than attempting to shape the program to fit 

 the organization. In the discussion of instrumentaHties, mechanics and prob- 

 lems occupying the remainder of the present volume, this point should 

 always be remembered. The objective was to get the best results in the 

 hands of the troops at the earliest possible moment. The means employed 

 were those which in the light of the surrounding circumstances seemed 

 best calculated to achieve this objective. 



