Muscatine

If an American soldier feels that they are fighting an unjust war and that the commands for him/her to fight that war are unjust...do they have the right/option of refusing that unjust order or refuse to fight that war?

The short answer

is NO.
My question is why would you think it is an option for a soldier to not follow a lawful order? Orders in a time of war are not a time for debate on the battlefront. Fokls get killed that way.
Herman

They

They only have the right to refuse to obey an illegal order.
Has nothing to do with philosophies or morals of just or unjust war.

Our military is all-volunteer now. No one serving was drafted or otherwise mandated to be there. That's why anyone refusing an order has a big problem.

Any soldier refusing an order is really in a pickle. Our Congress sanctioned the war by giving our president the sole authority to go to war, and cemented that by continuously funding it.

The UN has further sanctioned the war action with its resolutions acknowledging the war, and asking for all member-nantions to help the US & Great Britain bring peace to the area. All this makes it legal.

Refusal such as you allude to can bring serious court-martial charges against the troop for a whole list of things.

JMHO.

I didn't

I didn't say anything about a ''lawful'' order.