The Fighting Generation

Although his name is not credited anywhere, Alfred Hitchcock is acknowledged as the uncredited director of this short film exhorting the audience to take part in the Sixth War Loan series by buying bonds. There's a reality-bending prologue in which Eddie Bracken in the audience watches Eddie Bracken on the screen make the pitch; this strikes me as more in the line of Bracken's occasional director, Preston Sturges, than Hitchcock's sense of humor. In the second part, nurse Jennifer Jones urges us to buy bonds to help make sure that men like her wounded childhood friend lying on the hospital cot there, can win the war.

As remarked, neither seems particularly Hitchcockian, but it's quite possible, given his relationship with Selznick, at whose studio this was shot. It's just that we're so used to Hitchcock as a visual stylist that it seems odd.