Today in World War II History—4 May 1944

Exercise Fabius, Slapton Sands, England, May 1944. US infantry descend into an LCVP during D-day invasion practice. (US Army Center of Military History)
75 Years Ago—4 May 1944: Countdown to D-day: In Exercise Fabius, a full-scale rehearsal for D-day, Allied troops who will land on Sword, Juno, Gold, and Omaha Beaches make landings on English beaches in the largest amphibious training exercise ever.
Movie premiere of Gaslight, starring Ingrid Bergman, Joseph Cotten, Charles Boyer, and Angela Lansbury in her screen premiere.
St. Louis Browns baseball team drops segregation policy that restricted black fans to the bleachers.