Those who support zionism and the medinah, should serve in the army, and in fact many if not most do. Those who oppose zionism, favor peace, and are neutral in the Arab-Israeli Conflict (such as groups allied with Satmar), are legitimate conscientious objectors and shoujld not be conscripted.
Those who favor the state, but who want someone else to do the work, are hypocrites.
By impression is that most hareidim are ideologically sympathetic with the Satmar (i.e. Eidah Hareidis) position, but are by trying to peacefully co-exist with the zionists have created a misimpression that they support zionism. Rather than trying to be neutral in the Arab-Israeli conflict, they are trying to be neutral in the conflict between Torah and Zionism – which is a mistake but is understandable since we have a tradition of trying to avoid conflict with Jews (even apikoresim like the zionists).