In December 1948, the Dutch attacked and occupied the cities of Yogyakarta and Surakarta as part of Operation Kraai. The Indonesian army led by General Soedirman started a guerrilla war from surrounding areas. The Dutch said that the Republic was destroyed and no longer existed. To disprove this claim, the Indonesian army conducted large-scale raids into the cities of Yogyakarta and Surakarta, called "Serangan Oemoem". On August 7, 1949, Indonesian troops led by Slamet Riyadi managed to beat the Dutch troops and occupy the city for several hours. To commemorate this event, the main street of the city of Surakarta was renamed "Brigadier General Slamet Riyadi Street".