30 Aug 1939
- Poland refused to dispatch a delegation to Germany to negotiate over the topics of Danzig and the Polish Corridor. Polish Commander-in-Chief, Marshal of Poland, Edward Rydz-Smigly ordered the mobilization of the army. ww2dbase [The Danzig Crisis | CPC, AC]
- Isoroku Yamamoto was appointed the commander-in-chief of the Combined Fleet by Navy Minister Mitsumasa Yonai. ww2dbase [Isoroku Yamamoto | CPC]

30 Aug 1939 Interactive Map
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