Complex sentence: The 19th division had continued its attack southeast, and between July 25--18 25 fierce encirclements and counter-encirclements raged before the Finns managed to capture the main road and cut the railroad between Sortavala and Matkaselkä, which was captured July 18.
Split into simpler sentences: The 19th division had continued its attack southeast, and between July 18th and 25th. Fierce encirclements and counter-encirclements raged before the Finns managed to capture the main road and cut the railroad between Sortavala and Matkaselkä, which was captured July 18.