The early stages of the Battle of Belgorod began on the Eastern Front when the Wehrmacht's XI Army Corps returned to their prior fortified positions on both sides of the city
Brazil, having banned the use of gasoline powered automobiles the prior year, now did the same for motorcycles in order to conserve fuel.
Sarah Sundin, on her blog, notes:
Today in World War II History—July 23, 1943: First US naval air squadron to operate in Britain arrives for antisubmarine duty—squadron VP-63 with PBY Catalinas, nicknamed the “Mad Cats."
She also notes that Rommel assumed command of Army Group E in Greece to defend that territory from an anticipated Allied invasion.