Complex sentence: Washington's unit spent the summer of 1779 recruiting and remounting, and on November 19,1779, was transferred to the Southern theatre of war, and marched to join the army of Major General Benjamin Lincoln in Charleston, South Carolina.
Split into simpler sentences: Washington's unit spent the summer of 1779 recruiting and remounting. On November 19,1779, his unit was transferred to the Southern theatre of war, and marched to join the army of Major General Benjamin Lincoln in Charleston, South Carolina.