The Battle of Westerplatte was the first battle in the Invasion of Poland, the beginning of the Second World War in Europe. Beginning on September 1, 1939, German naval forces and soldiers assaulted the Polish Military Transit Depot (Wojskowa Składnica Tranzytowa, WST) on the peninsula of Westerplatte, in the harbour of the Free City of Danzig. The depot was manned by fewer than 200 soldiers, but held out for seven days in the face of a heavy attack that included dive bomber attacks. The defense of Westerplatte served as an inspiration for the Polish Army and people in the face of successful German advances elsewhere, and today is still regarded as a symbol of resistance to the invasion.