3-9. Historical experience demonstrates that forces trained exclusively for offensive and defensive operations are not fully proficient at stability operations. Likewise, forces involved in protracted stability operations or DSCA require intensive training to regain proficiency in offensive or defensive operations before engaging in large-scale ground combat operations. While there is inherent risk in either situation, there is greater risk to the force when it is required to conduct offensive and defensive operations for which it is not proficient. Commanders resolve the tension inherent in the different training requirements by setting priorities for individual, collective, and unit mission-essential tasks based upon higher echelon guidance and what their units are most likely to be tasked to do.