"Our reaction must not be from 'the gut,' such as in the case of the students who said they would not enlist in the army, but rather from 'the head' and from our sources. Serving in the army is a Biblical commandment, for we still are in a state of war and we have enemies surrounding us - even though there are those who like to fool themselves otherwise. If there is no army, who will protect us? The war in which we find ourselves is a defensive one, thus that it has the Halakhic [Jewish legal] status of a 'mandatory war.'
I really do understand these teens. The sight of IDF soldiers throwing these brave Jews out of their homes instead of protecting them, all for the benefit of a corrupt government will not be forgotten. However, let's remember that we are still surrounded by enemies, and until the day when "nation shall not lift up sword against nation, neither shall they learn war any more" the army is still important. Let me rephrase that: Serving in the army is more than important, it is a mitzvah. Of course, if one receives orders that are in opposition to Jewish Law he should simply not fulfill them. This was the case before "disengagement" and it will always be the case.Update: Rabbi Melamed's opinion:
"The ambition and goal of enlisting in, contributing to, and changing the army, has not proven itself. More than the religious officers changed the army, the army changed them."