Complex sentence: Under the leadership of Major Friedrich Kurg, the Omakaitse drove the Soviets from Tartu, behind the rivers Pärnu and Emajõgi, securing South Estonia under Estonian control by 10 July.
Split into simpler sentences: Under the leadership of Major Friedrich Kurg, the Omakaitse drove the Soviets from Tartu, behind the rivers Pärnu and Emajõgi. Thus they secured South Estonia under Estonian control by 10 July.