Ludwig von Gress
Nothing shows the different approach to the entertainment of the troops of Soviet dictatorship and that of the troops of democracy, United States one in this instance, better than this song. Morbid solemnity of Russian steppes in Katjusha (not, of course, in the version I picked up), German maudlin melancholy in Lily Marleen, British lower classes irreverence in Hitler has one ball is overwhelmed by American joy of life so vivaciously expressed in Bugle Boy.
The Andrews Sisters, LaVerne Sophia, Maxene Angelyn and Patricia Mary, were born in Minnesota to a Greek father and Norwegian mother. During the WWII they entertained Allied troops in Africa, America and Italy, visiting the Army, Navy, Air Force, Marines and Coast Guard bases, hospitals and munition factories. Many recordings and live performances were made free of charge. Patricia lived until 94. All in all, decent, patriotic human beings, very different from, say, Hanoi-Jane Fonda.
The following is from Abbott and Costello 1941 film Buck Privates: