Complex sentence: The 3rd Tank Division of the IJA crossed the Yellow River around Zhengzhou in late April and defeated Chinese forces near Xuchang, then swung around clockwise and besieged Luoyang.
Split into simpler sentences: The 3rd Tank Division crossed Huang River around Zhengzhou late of April and defeated Chinese forces near Xuchang. Then the 3rd Tank Division swung around clockwise and besieged Luoyang.