Today in World War II History—December 18, 1940
Thursday, December 18, 2025 by Sarah Sundin

Prototype Curtiss XSB2C-1 Helldiver on its maiden flight, 18 December 1940 (US government photo)
85 Years Ago—Dec. 18, 1940: Maiden flight of Curtiss SB2C Helldiver (US Navy scout-bomber).
The Vanderbilt Mansion National Historic Site is established in New York.