Effie Eitam went to visit a mechina, a religious army preparatory school, in Lod. When talking to the boys about religion and the army, he related some stories from his personal experiences. One of those stories was an absolutely amazing story with Rav Mordechai Eliyahu zt"l.

Eitam relates that while the IDF was still in Lebanon, when he was commander of Otzavat HaGalil (ugda 91), he was the only senior commander that was religious in the whole division. He says he went to his rabbonim in Yerushalayim to discuss how he, as a high ranking religious commander could add a unique flavor to the army in his position. His rabbonim told him that he should form a "prayer commando unit" - he should form a select group of rabbonim that will daven every time the division is in distress.

Eitam says that Rav Mordechai Eliyahu was the "commander" of this special commando unit, and he would call him at any hour of the day or night if something serious was going on with their unit.. One time, a unit went into a mine field by Musawa. These were laser triggered mines, and the unit found themselves right in the middle of the field, in a very difficult situation. It was the middle of the night, and the moment the commander updated him with the situation, he immediately called Rav Eliyahu and the other rabbonim and asked them to daven for the unit.

While the rabbonim were davening for the unit, Rav Eliyahu told Eitam  that he should the order to to immediately leave the mine field. Just walk right out. Eitam asked for confirmation, as the mines could be activated at any moment. The rav repeated his instructions that the unit should be told to leave the area. Eitam says he gave the instructions and the unit began to leave.

While this was happening, Eitam says, he heard over the communications that area commander of Hizballah was complaining that he was not able to activate the mines, and he has a whole IDF unit trapped in the field. This Hizballah commander kept complaining, frustrated that he couldn't do anything.

The moment, Eitam says, the commander in the field reported that the last soldier had gotten out, he told Rav Eliyahu they can stop praying. Moments later, right after the rabbonim stopped davening, the whole field of mines exploded. (source: Srugim)

An amazing story of Rav Eliyahu's power and effectiveness of prayer, and I would add that it took a lot of emunas chachomim for him to move his men through an active mine field on the words of a rav.