In May 1940, KG 54 played a critical and controversial role in Fall Gelb, the German offensive into Western Europe. On 14 May 1940, as the Battle of the Netherlands reached a climax, KG 54 carried out the Rotterdam Blitz, which destroyed the centre of the city and killed many civilians. The attack played a role in the surrender of the Dutch Army.[2] KG 54 continued to support German forces in the Battle of Belgium and Battle of France through to the surrender of the latter in June 1940.