 McNamara's tendency to take military advice into less account than had previous secretaries and to override military opinions contributed to his unpopularity with service leaders.It was also generally thought that Systems Analysis, rather than being objective, was tailored by the civilians to support decisions that McNamara had already made.The most notable example of systems analysis was the Planning, Programming and Budgeting System (PPBS) instituted by United States Department of Defense Comptroller Charles J. Hitch.