Battambang is the capital of Battambang province and the third largest city in Cambodia. The city is situated on the Sangkae River, which winds …Battambang is the capital of Battambang province and the third largest city in Cambodia. The city is situated on the Sangkae River, which winds its way through the province. Battambang was founded in the 11th century by the Khmer Empire. It later became a major commercial hub and the capital of the Siamese province of Inner Cambodia. It was reintegrated into Cambodia during French colonisation. During the 20th century, Battambang was Cambodia's second largest city, but it was later overtaken by the growth of Siem Reap. It was impacted by conflict and genocide in the 20th century, with the city forcibly evacuated during the Democratic Kampuchea period. It was a front during the Khmer Rouge insurgency until the 1990s.