Thought I'd create this thread to explore the genesis of modern Urban Warfare, and all topics associated with it, including battles, equipment used, tactics, combatants, etc.
I'll start us off with the Battle of Westerplatte, the first battle of formal World War II time period.
http://en.wikipedia.org/wiki/Battle_of_Westerplatte
The Battle started on September 1st, 1939, the first day of the German invasion of Poland. Hostilities commenced when the German Pre-Dreadnaught Battleship
Schleswig-Holstein opened fire on the Polish military transit depot on the Peninsula of Westerplatte in Danzig. The Westerplatte Peninsula was defended by a garrison of 200 Polish soldiers, who had built fortifications of trenches, a barracks, and 5 guardhouses.
They were attacked by a German force of 3400, including elite Naval Infantry and SS Danzig forces. The Germans thought that the battle would be relatively easy, however, the Polish forces managed to resist for a week. After the first German attacks on the fortress-island stalled, the Germans decided to bombard the fort and garrison into submission with heavy naval and land based artillery, as well as Stuka dive bombers. Despite numerous German assaults, the fortress managed to hold on, inflicting over 250 casualties on the German forces. On September 7, at 09:45, the Polish garrison surrendered, because they were running low on ammunition, food, water, and medical supplies. They had suffered 75 casualties, compared to the 250 on the German side. They had also managed to stall the German advance into Danzig proper, holding up about 3400 German troops.