How did the characters in To Be or Not to Be aid the Polish Resistance?

In the 1942 film To Be or Not to Be, directed by Ernst Lubitsch, the characters aid the Polish Resistance by utilizing their professional skills as Shakespearean actors to combat the Nazi occupation of Warsaw.1

After the Nazi invasion leaves their theater company out of work, the lead actors—portrayed by Carole Lombard and Jack Benny—find a patriotic purpose for their talents. They employ their acting abilities and theatrical costumes to infiltrate Nazi ranks and execute a complex plot. Their primary objective is to prevent a double agent from delivering vital information to the Nazis, effectively using their performance skills to sabotage the enemy and support the resistance effort.1