Which factor does NOT contribute to combat effectiveness in tactical planning?

In tactical planning, combat effectiveness is crucial for the successful execution of military operations. The factors that enhance combat effectiveness generally include strategic positioning of forces, availability of supportive firepower, and high troop morale. Effective positioning ensures that troops are in optimal locations to engage the enemy while minimizing vulnerabilities. Supportive firepower can provide necessary fire support to troops on the ground, assisting in suppressing the enemy and maintaining control of the battlefield. High troop morale is essential, as it can significantly impact the willingness and capability of soldiers to execute their missions.

On the other hand, sudden troop withdrawals can undermine the overall effectiveness of a combat unit. Such withdrawals can create gaps in the line, expose remaining forces to increased enemy engagement, and instill confusion or panic among soldiers. This act can also disrupt the cohesion and plans that have been established, ultimately leading to a decrease in operational effectiveness. Therefore, sudden troop withdrawals do not contribute positively to combat effectiveness and can hinder tactical success.