He is happy...and he had a reason to be happy
  - in the thirties,Poland was one of the strongest army in Europe.

The Polish stonetrooper

The Polish Troopers firing at a  German plane on 1 September 1939 in the mornig,few hours after breaking out the war. 

Look out!German plane!

Marshal Edward Rydz-Śmigły
      He deeply believed that Poland's allies would help her with Germans.Unfortunately,England and France turned out to be cowards.
         - they chickened out while the Poles were fighting alone with Germans.French and the Britons didn't have enough courage.If the Poles had their tanks and planes they would have won that war.
            - why?

Because the Poles had enough courage to get in a tank and move towards Germans.

         ironically but true and sad as well