to Vienna by train. That winter, it was converted to the 9th Panzer Division and formally redesignated on 3 January 1940. It consisted of the 9th Rifle Brigade, the 33rd Panzer Battalion, the 102nd Panzer Artillery Regiment, and several other divisional units. Early campaigns Following a further reorganization increasing its strength to two tank battalions and three motorised infantry regiments, the division was sent to the Western Front to participate in the Battle of the Netherlands starting on 10 May 1940. Part of the 18th Army, which defeated The Netherlands in a grueling five days, 9th Panzer Division played an essential role in the German strategy. The division was the only German mechanized force allocated to 18th Army and was intended primarily to link up with airborne forces landed near Rotterdam and The Hague. On 12 May, the division was launched in the south of The Netherlands to exploit a breakthrough by German infantry divisions, quickly advancing to the Moerdijk bridges, which had been captured by Student's paratroopers. Before that, near Breda, the division split up, sending one battalion north over the Moerdijk bridges to try and enter the Dutch National Redoubt, Fortress Holland. On 13 May, however, during its first actual fighting of the campaign, the battalion suffered considerable losses in a failed assault on the centre of Dordrecht. On 14 May, the battalion stood ready to assault Rotterdam, but the Dutch surrendered the same day after a carpet bombing of that city's civilian centre by the Luftwaffe. The other part of the division went south, after the retreating French 7th Army and the Belgian Army, towards Antwerp and Dunkirk. Following the evacuation of Dunkirk, 9th Panzer Division was assigned to Panzer Group Guderian and participated in the Battle of France. During this stage it was under the command of XXXIX Motorized Corps. It pushed through the Weygand Line towards Paris, crossing the Oise River, Aisne River, Marne River and Loire River, taking thousands of prisoners in the process. By the time of the French surrender, the 9th Panzer Division was in Lyon. During the Western campaign, the division was credited with covering more ground than any other German division. The division returned to Vienna in July 1940. There, it continued to reorganize and grow, adopting the organization that it kept for most of the war with one tank regiment, two panzergrenadier regiments and one artillery regiment. In September,