1On June 4, 940, Churchill informed the House of Commons that Dunkirk had successfully retreated, but also reminded that "the retreat did not win the war." Churchill immediately delivered the most inspiring speech in World War II: Although we lost the battle, we will never surrender, never give in, and we will fight to the end. We must be very careful not to call this rescue a victory. The war was not won by retreating. However, this rescue has won, which should be noted. The victory was won by the air force. Many returning soldiers have never seen the action of our air force. They only saw enemy bombers who escaped the cover attack of our air force. They underestimated the achievements of our air force. This is the reason for this matter. I must tell you about it.