ONE APPROACH to the study of social and organizational change is the study of life histories of strategic cohorts.' This approach is particularly appropriate for military elites because of the marked age grading in education, selection, and career development. Thus, the officer who is slow in his movement through the ranks is clearly recognized as over-age in grade. Cohort analysis must be seen in the light of external events affecting the cohort. The demands placed upon the American military establishment during this century have altered the nature of relations between the and military sectors of society. American involvement in two world wars and in postwar world politics has required a vast expansion of the armed forces which was achieved through widespread enlistment and conscription of civilian soldiers. The increasingly complex technology of warfare and of military organization, moreover, required professional skills other than those traditionally taught within the service academies. Thus, there has been a tendency toward reciprocal of the and military spheres.2 The defining characteristics of this interpenetration are (1) a convergence of the skills required in the and military spheres as the technological bases of both systems become more complex; (2) a broadening of the base of military recruitment generally and of officer recruitment specifically, so that nonacademy graduates are admitted to the officer corps; (3) the presence of personnel employed within the military system.3 The values generated within organizations such as the military provide a basis for the development of processes aimed at maintaining the structural integrity of these organizations. These processes may be said to be maintaining the boundaries of the organization as a system.4 The broadening of the base of military officer recruitment, which causes newly