13 September 1940
Italians advance into Egypt, occupying Sollum
War in the Air
The first service test Bell YP-39 Airacobra makes its maiden flight.
Bell receives an order for 254 P-39Fs Airacobras, using a new Aeroproducts propeller. Previous P-39s used a Curtiss Electric propeller, but increased production of military aircraft has left that propeller in short supply.
How to cite this article: Rickard, J (28 December 2007), 13 September 1940, http://www.historyofwar.org/secondworldwar/date/1940_09_13.html