Cecil B. DeMille was due to direct the film when the rights were originally purchased in 1925, and Alfred Hitchcock was to direct a proposed version in the 1930s.
The name of the protagonist in The War of the Worlds, Dr. Clayton Forrester, was borrowed by the popular series Mystery Science Theater 3000 to be the name of their villainous scientist.
Just before the atomic bomb explodes one of the extras on the left hand side of the screen does not have any goggles to put on so he makes a pair with his hands.
In the farmhouse breakfast scene there is a plate with four slices of toast on the table as she is cooking the eggs. When they sit down it has disappeared.
When wild horses are running down a steep embankment, in the final seconds of the scene you can see men on horseback following the wild horses, raising their arms and causing the horses to stampede.
Col. Ralph Heffner: Everybody out of here, everybody out! The Air Force will take care of these babies now. Doctor Forrester, get out of here! Everybody out of here! Everybody ou -...
Where (according to the movie) did the Martians first land?
A
Corona, California, about 50 miles south-southeast of Los Angeles proper. Corona is in Riverside County near where Interstate 15 and route 91 now interesect. Neither highway was there at the time: just the old US 395. Corona was mainly ranches, farms, and woods at the time. It is now a relatively modern, bustling city near where two major Southern California highways and two large California counties (Orange and Riverside) meet.