A possible approach to ensuring the necessary qualitative properties of analytical models by adapting their parameters to probable changes in the course of complex processes is considered. The approach involves the use of a polymodel description of processes with the aim of mutual compensation of the objective shortcomings of heterogeneous models, as well as the use of simulation modeling capabilities to adjust the parameters of analytical models in cases where the use of the latter is due to strict limitations on the time of obtaining calculation results and developing control influences based on them. The considered example of parametric adaptation of the Lanchester-type model reflects probable changes in the number of opposing sides during the conduct of hostilities.