September 1939
Politics:
1st: Germany declares war on Poland! France and the United Kingdom issue ultimatums to Germany to withdraw or suffer the consequences.
1st: The United States, though maintaining its position as a neutral power, has begun discussing arms sales to the Allies, and also has suggested international maneouvres with Sweden and Denmark, both agreeing to allow small forces from these other nations onto their soil. The Axis has condemned this action as detrimental to the maintenance of peace in the region, adding that should any of these forces trespass on their national soil it would of course be taken as an act of war.
3rd: France and the United Kingdom honour their alliance and declare war on Germany, and begin seeking ways to aid Poland.
3rd: Norway secures German iron-ore supplies over the winter by refusing Allied demands that she block the port of Narvik. New Norwegian Prime Minister Dan "Quisling" Cook joins Axis alliance and Germany promises to support her if the Allies attack her soveriegn territory. The German government later announced that it would be sending security forces to Norway to protect it's people from possible Allied attack.
3rd: Denmark declared its neutrality, and its determination to oppose any violation of its soveriegn territory . Norway denounced this move, claiming that Denmark had a duty to observe friendly relations with Norway. The International wargames with Sweden and the United States are confirmed, to involve Swedish and Danish ground forces and the USS Ranger of the United States Navy.
3rd: Denmark warned Germany not to attack Sweden, causing Germany to respond that she had no intention of violating Sweden's neutrality, and that the Allies- Poland, France and the United Kingdom- should also refrain from doing so.
27th: Netherlands declares total neutrality, fearing a spread of the hostilities. A special naval task force is sent out to patrol territorial waters.
29th: Denmark cancels international wargames and proposes a peace conference instead. All beligerents and any other nations are invited to attend to resolve the differences peacefully.
29th: Germany states that it will attend the peace conference but will not allow any Polish representatives to leave the areas where fighting is taking place for security reasons. Spain reassures Germany that "Poland is not a country" and as such would not attend the conference anyway. Poland then denounced the conference and called on other nations to boycott it.
Maneouvers:
1st: German transport assets are reportedly massing in the region of Schleswig-Holstein.
3rd: The United Kingdom has begun musterring a substantial task force to escort any Polish ships escaping through the Skagerrak. France is also preparing to send her own, smaller task force.
5th: German security forces begin disembarking at Oslo airfield.
7th: A small convoy of German ships arrives at Oslo having passed beyond the patrols of Allied warships.
8th: Polish Destroyers safely arrive in Allied territorial waters.
25th: Denmark goes to higher state of readiness.
28th: Sweden goes to higher state of readiness. Fleet leaves harbour.
29th: Danish prepare to evacuate to Iceland in emergency.
29th: Rumanian Government orders partial mobilisation.
30th: Hungary responds with partial mobilisation of her own army.
30th: Belgian Government orders partial mobilisation.
Naval Encounters:
3rd: A task force of the German Kreigsmarine reported sinking several Polish submarines near the Gulf of Danzig. The Polish government boasted that its forces had also inflicting significant damage on the task force in question.
4th: The German task force above proceeded into the Gulf of Danzig and sunk a Polish destroyer. The coastal artillery at Hel Fortress opened fire on the German ships and caused some damage before they moved out of range back out into the Baltic Sea.
Land Battles:
1st: German forces storm across Polands Western Border.
3rd: Germans capture Bydgoszcz.
6th: Germans capture Katowice.
8-15th: Battle for Torun
15-17th: Street fighting in Poznan, Lodz and Krakow destroys many historic buildings
23rd: The attack on Gdynia begins
29th: German government announces that Warszawa has been completely surrounded.
30th: Polish troops hiding out in the hills move down to reoccupy Bydgoszcz
Polish forces remain in strength North of Poznan, in Warszawa, and in Western Poland. September is now over.