Shoppin, who says? If so, then the yeshiva boys should be the first ones drafted.
NYer,
1. Rav Ovadia said that without the army there would be no yeshivot.
2. Actually unity is the key. None of Achav’s soldiers were killed in battle because they were united. Unfortunately, part of the Chareidi world has formed its own separate nation. It does not take part in Am Yisrael’s celebration (Yom haAtzmaut) or sorrow (Yom haZicharon). Rambam says that such a person has no place in the next world even if he has Torah and good deeds.