The Concepts Evaluation on Model (CEM) is a computer simulation model of theater land and air warfare that is fully automated and deterministic, yielding a single outcome for any situation simulated. In previous projects, stochastic versions of the CEM were developed that make use of individual replications of stochastic attrition input data and that simulate certain CEM processes based on statistical distributions rather than entirely on expected values. In this project (Phase III), refinements were made to the stochastic treatment of processes in the CEM, and statistical analyses were conducted to determine whether the distribution of results of the stochastic CEM (STOCEM) using deterministic attrition assessment is the same as the distribution of results of the STOCEM using stochastic assessment of attrition, and to estimate how many STOCEM replications would be required for acceptable confidence intervals based on a current Korea scenario. Simulation, Combat model, Theater- level, Stochastic, Deterministic, Warfare, Regression, Confidence interval, Experimental design