Attack on Berlin

The Attack on Berlin, also known as "The Berlin Incident" (German: Angriff auf Berlin) was a battle that occurred in the Gendarmenmarkt square of Berlin where the population of Germany faced off against the armies of the Arthurian Empire, who invaded through a gate from another world.

Imperial Army Incursion
On February 20, 1940, a portal to another world appeared in Berlin, from which an entire army of knights, as well as creatures such as dragons and ogres, assaulted the entire city. The invading army began their invasion by indiscriminately attacking civilians, causing a few hundred deaths and taking an unknown number of civilians back through the Gate as slaves and prisoners. Several officers of the invading army raised the flag of their nation and arrogantly and over-confidently declared the annexation of the country of Germany as part of the Empire, despite not facing the full strength of the German military yet.

Wehrmacht Intervention
Hours into the battle, battalions of Wehrmacht soldiers, supported by planes and jets from the Luftwaffe, counterattacked against the Imperial Army, decimating the enemy forces with far superior firepower. Within hours, the army that invaded Berlin was in full retreat, leaving the Wehrmacht to mop up anyone left behind in the battle. Several officers of the Arthurian Empire were taken prisoner and interrogated.

Aftermath
After the battle, the German Empire locked down the entire city of Berlin, no one let in or out and houses are filled with military officials, eliminating any possible threats that came through the Gate of Two Worlds.

Months later, a massive expeditionary force of over 20,000 soldiers, including those from other Central Power countries, called the Tor Korps (English: Gate Corps), under the command of Erwin Rommel was established in order to investigate the other side of the gate that remained in Berlin and potentially conquer it in the name of Germany.