When you join the military, you certainly DO have the right to refuse an ILLEGAL order.
Whether or not an order to attend a war which many consider was started illegally is open to question.
The TA is 7000 men down, people are leaving the Armed Forces over Iraq by exercising their options or PVR-ing (although they might not state as much at the time) and yet Bliar's gang of liars still have no defined exit strategy.
This CM will be a very interesting event....