Monitoring and predicting military vehicle impacts are needed for timely land management intervention.  Global positioning systems (GPS) can be used to track military vehicle movement during training exercises.  The severity of the impact is dependent on the vehicle type, operating conditions (velocity and turning radius) and the soil condition.  Vehicle impact studies have been conducted to determine these relationships.  Using the GPS tracking and these vehicle impact relationships, military training impacts can be assessed and quantified.  Examples of predicting vehicle impacts at various military installations will be presented.