The Tactical, Numerical, Deterministic Model

The TNDM is a quick-reaction, inexpensive, computer-assisted mathematical simulation of air-land combat. It is suitable for planning, for analysis, and for examining a variety of combat situations, ranging from a small-unit, low-intensity combat action, to multi-day corps or army conventional battles. ...

Before the outbreak of the Kuwait or Gulf War, in January, 1991, planning analyses using the TNDM forecast casualty rates for US forces far lower than published predictions by any other model. In post-war assessments, adjustment of inputs to those actually experienced in the four-day ground war, yielded TNDM attrition results within 5% of the actual historical experience of US ground forces during the period February 24-28, 1991.

(via The Economist)