Abstract: Taking advantage of Markov process theory and considering synthetically a good many elements of an air-to-ground striking mission, the battle scenario and the mathematical models for the air-to-ground strike actualized by a battle-plane were set up. Through analyses on the combat survivability, the striking capability and the employed tactics of the thrown out battle-plane, alongwith the analysis on the physical characteristics and damage mechanism of various air defense weapon systems in the battle field, the time related operational effectiveness measurements of mission success rate, target killing rate and battle-plane loss rate were evaluated. The optimal combat time was also correlated to the cost. An example calculation for the operational effectiveness of a battle-plane in the postulated air-to-ground scenario was presented. The results indicated that the established models and the associated analysis efforts can objectively describe the essential of an air-to-ground strike combat.