Whether the Conflict is illegal or not is beside the point.
The man joined the Armed Forces, therefore it is his duty to go where his superiors tell him. If he had any thoughts that he might not be able to follow the order(s) of his commander(s) then he never should have join in the first place.
He has taken an oath to defend the U.S. from all enemies both foreign and domestic. The powers that be in the U.S. have declared the insurgents in Iraq to be enemies of the U.S. He is therefore duty bound to goto Iraq and defend his country.
The man joined the Armed Forces, therefore it is his duty to go where his superiors tell him. If he had any thoughts that he might not be able to follow the order(s) of his commander(s) then he never should have join in the first place.
He has taken an oath to defend the U.S. from all enemies both foreign and domestic. The powers that be in the U.S. have declared the insurgents in Iraq to be enemies of the U.S. He is therefore duty bound to goto Iraq and defend his country.