Operations research

Originally introduced in a military context, operations research applied quantitative methods, especially of statistics, to developing optimal solutions to challnges in military operations. Some of the early areas of concentration were anti-submarine warfare and the aiming of anti-aircraft artillery.

As the field developed, it began to introduce methods from other quantitative fields, and develop its own toolkit. Optimization techniques were key, coming from mathematics, economics, game theory. Extensive use was made of techniques such as linear programming, nonlinear programming and dynamic programming.