[1] The Soviet East Pomeranian Offensive, commencing on 24 February 1945 managed to cut off and surround the city and its defenders (mostly from the German Army Group Vistula).
The first commander of Festung Kolberg was an elderly officer, General Paul Herrmann [de], but due to illness he was transferred in February to a less demanding post.
[2] The German defence forces represented various formations from the Army Group 'Vistula,' some tasked with defending the fortress, others simply cut off in the Kolberg pocket.
The German units also received some air and sea support (including artillery fire from pocket battleships Lützow and Admiral Scheer).
On the same day, the nearby city of Köslin (now Koszalin) fell and Soviets started to gather reinforcements to take Kolberg.
The destruction of the collegiate church in Kolberg after heavy artillery shelling by katyushas allowed the Polish troops to breach the inner city.
Polish forces assaulted the railway station (defended by a German armored train Panzerzug 72A, which was destroyed on 16 March), pharmaceutics factory and the horse riding arena.
On 17 March the Germans abandoned most of the defensive lines, leaving only a small number of troops to cover their retreat, and started to evacuate their main body of forces from the city.
Polish forces took the railway station and reached the port, but most of the German troops managed to evacuate to Swinemünde (now Świnoujście).