Final answer:
Joshua is the Israelite commander for whom the sun stood still, as recounted in the Old Testament, signifying a divine intervention during a critical battle.
Step-by-step explanation:
The Israelite commander for whom the sun stood still is Joshua. This event is recorded in the Book of Joshua in the Old Testament of the Bible. According to the text, this miraculous event occurred during a battle when Joshua prayed for more daylight to achieve victory over the Amorites. Consequentially, it is written that the sun stopped in the middle of the sky and delayed going down about a full day, a phenomenon affirming a divine intervention on behalf of the Israelites in the battle.