Below is an animated map of the progress of WWII day by day from 1 September, 1939 to October, 1945 when the last major units of the Japanese military surrendered. It provides a fascinating view of the way in which the fortunes of the went back and forth.
This podcast is a wider discussion of strategy and the different aspects and types of strategy there are. Strategy is not one overarching concept except at its most basic. There are different nuances to strategy and strategy development that exist depending on the level at which the strategy is being developed and implemented. Download this episode (right click and save)