Complex sentence: Edward III (1312--1377), King of England from 1327 until his death, restored royal authority after the disastrous and unorthodox reign of his father, Edward II. Edward III transformed the Kingdom of England into one of the most formidable military powers in Europe.
Split into simpler sentences: Edward III (1312--1377) was king of England from 1327 until his death, and is noted for his military success. Restoring royal authority after the disastrous reign of his father, Edward II, Edward III went on to transform the Kingdom of England into one of the most formidable military powers in Europe.