58 German divisions, including 9 Panzer divisions, were deployed against Poland. Germany commanded 1.5 million men, 187,000 motor vehicles, 15,000 artillery pieces, 2,600 tanks, 1,300 armored vehicles, 52,000 machine guns and 363,000 horses. 1,390 Luftwaffe warplanes were used to attack Polish targets. On 1 September the German navy positioned its old battleship "Schleswig-Holstein" to shell Westerplatte, a section of the Free City of Danzig, a defended enclave separate from the main city and awarded to Poland by the Treaty of Versailles in 1919. 53 navy ships were designated for action against Poland.