Complex sentence: On January 10,1945, as the Commanding General of the 65th, he sailed to the European Theater of Operations (ETO), where he joined General George Patton's Third Army on the Sarre River and fought with it across Germany and Austria.
Split into simpler sentences: On January 10,1945, as the Commanding General of the 65th, he sailed to the European Theater of Operations (ETO). He joined General George Patton's Third Army at the Sarre River, and fought with it across Germany and Austria.