This paper researches the warfare command decision making problems in dissymmetrical information war, which are of important to military system science researches. Based on the features of dissymmetrical information war, we develop a corresponding warfare command decision making model by using Lanchester square law equation. Two proper military stratagems which can transform the battlefield situation are pointed out and analyzed quantitatively with the equation. The analysis model and the proposed approach may reflect the effect of information war in warfare command decision making. The computation results show the feasibility and effectiveness of the proposed model. The research results may provide a theoretical reference for warfare command decision making.