The division was formed on 26 August 1939 as part of the third Aufstellungswelle in the Hamburg area of Wehrkreis X. It initially consisted of Artillery Regiment 225 as well as the Infantry Regiments 333, 376 and 377. The division was formed from Landwehr personnel from the regiments' areas. The division's initial commander was Ernst Schaumburg. The 225th Infantry Division was sent to Aachen and used for border guard duty while the bulk of German forces focussed on the Invasion of Poland. The second battalion of Regiment 377 was given to the 555th Infantry Division on 29 January 1940. After the German victory in Poland, the 225th Infantry Division saw action in the western campaign, specifically in the invasion of the Netherlands. The division took part in the drive on Amsterdam. After the German victory in the west, the 225th Infantry Division remained on occupation duty until the end of 1941. The Artillery Regiment 225 joined 215th Infantry Division on 16 November 1941. In January 1942, it became one of the division that was quickly redeployed to the Eastern Front in response to the Soviet victory at the Battle of Moscow. The division became part of Army Group North and remained under this army group for the rest of the war, with a brief exception in July 1944, when the division was attached to Army Group Centre before being transferred back to Army Group North. The 225th Infantry Division saw action in the Soviet winter offensives of 1941/42 and, took part in the Siege of Leningrad, participated in the Battle of Demyansk from November 1942 to February 1943, and fought at Lake Ilmen between March and May 1942. At that time, the 333rd Grenadier Regiment fought at the Oranienbaum Bridgehead, where it sustained massive casualties between 1 May and 15 June 1942. As a result of these irrecoverable losses, the 333rd Regiment was disbanded in January 1943. On 20 February 1944, the 225th Infantry Division absorbed most of the remnants of the 9th Luftwaffe Field Division. Over the course of the year 1944, the 225th Infantry Division was part of the German retreat through the Baltic. The division was trapped in the Courland Pocket in October 1944 and eventually surrendered to Soviet forces in April 1945.
Noteworthy individuals
Ernst Schaumburg, divisional commander starting 26 August 1939.