"Our military commanders have said over and over again that a timetable for withdrawal sends the wrong message to our troops, but more importantly to our enemy"

This quote by Bill Shuster is describing the idea of setting a timeline for the withdrawal of troops from a dispute. Shuster is recommending that setting a timeline for withdrawal sends out an unfavorable message to both the soldiers and the enemy. He is implying that the military leaders have actually revealed this viewpoint multiple times. By setting a timeline for withdrawal, it might be viewed as a sign of weakness to the opponent, and could also be analyzed as a lack of commitment to the soldiers. Shuster is recommending that the military leaders have expressed this opinion several times, and that it must be considered when making choices about troop withdrawal. He is emphasizing the significance of sending a strong message to both the troops and the opponent, which setting a timeline for withdrawal could be detrimental to both.