Major Malcolm Wheeler-Nicholson founded National Allied Publications, the predecessor to DC Comics. He even helmed the creation of Detective Comics. The Bat-Man debuted in 1939’s Detective Comics #27. It’s Batman Incorporated, old-school! Check out this article from January 1942 from Mechanix Illustrated in which it was published in January 1942. It was published by the same publisher as DC Comics, which was founded in 1940s and ’50s. It’s not a ploy to surreptitiously shill Batman comics in a magazine.”]
Source: https://gizmodo.com/in-the-1940s-batman-protected-the-state-of-california-5872175