We have had ZERO wars fought by us since WW2. Congress has not declared war on anybody since WW2, for the simple reason that Article 2 section 4 of the UN Charter forbids us to do so without UN approval. It has all been "police actions" or "authorization for the use of force".
We have not had victory, because we have not waged war. War involves the destruction of the enemy's capabilities to the point where they are forced to surrender or face extermination -- which were the choices given to Germany and Japan in 1945.
BTW, I am a firm believer that the UN is a total joke and the U.S. ought to throw these bums out of their NYC digs to go to their other headquarters in Brussels, Belgium; Geneva, Switzerland; or Nairobi, Kenya. We then implode the UN building and let NYC develop the property. America withdraws from the UN and severs all ties with it.