Volume 6 of the North-Holland Systems and Control Series and contains the following essays: “Game theory,” M. Shubik; “A critical assessment of quantitative methodology as a political analysis tool,” Ralph E. Strauch Duels and George Kimeldorf; “Requirements for the theory of combat,” H. K. Weiss; “Lanchester attrition processes and theater-level combat models,” Alan F. Karr; and “Differential games,” Y. C. Ho and G. J. Olsder.
