Pack up Your Troubles is a joint vehicle for spunky, talented Jane Withers and zany comedy masters, The Ritz Brothers, Zanuch short- changed the Ritz Brothers (who intended to leave Fox" by second billing them to young Miss Withers. Jane performs a musical number and an impersonation of George M. Cohan (who was still well-known in 1939) and Eva Tanguay, the biggest of vaudeville headliners, but unknown by 1939. The Ritzes open the movie with A comedy and song routine that is supposed to tell the film audience why they could no longer get vaudeville gigs and thus had to join the Army to keep body and soul together. Sadly that is the last time we get to see a Ritz routine, so there is no precision dancing. Pack up Your Troubles seems less like a 20th Century Fox film than one from Universal, the boys' next studio, but it is better than its reputation. By the way, demeaning the Ritz Brothers is a demonstration of poor judgment. They may not be to everyone's taste, but Harry Ritz, along with Chaplin, Frank Fay and Ted Healy were the four most influential comedians of their era to other comedians. Ask Mel Brooks.