Japan's late-1941 freedom of action cannot be projected backward into early 1939. Allied garrisons were still at full strength rather than depleted by campaigns elsewhere. Japan had not acquired French Indochina without a fight, so it lacked the staging ground that later supported moves toward Burma and Malaya. Moving a significant land force would require shipping, concentration, and bases that did not yet exist as a ready system. The comparison shows why a two-year difference can transform an apparently familiar regional balance.
Notable Point · 1:51:53-1:52:24
Japan lacks its 1941 staging system in early 1939
Full Allied garrisons and the absence of French Indochina as a Japanese staging ground make the early-1939 balance unlike the opening of the historical Pacific War.