They should serve the country in any capacity that the State wishes: If not directly in the army ,then in other fields where they are needed. But one thing should be clear,they cannot while away their time in useless politics & 0n the other hand come begging to the government to subsidize their mode of living. Famous Rabbis in the past Studied,taught & worked for their living. Take an example from them.
Obama to meet with Jordan's King Abdullah in White House later this month (Reuters)
from the article: Secular Israelis pay for the ultra-Orthodox free ride