bag and baggage

All one’s belongings, usually in the sense of departing with them. It originally was a military phrase that meant all of an army’s property and was so used in the fifteenth century. To march away with bag and baggage meant that the army was leaving but was surrendering nothing
to the enemy. The alliterative nature of the term has appealed to many writers, including Shakespeare. In As You Like It Touchstone says, “Come, shepherd, let us make an honourable retreat; though not with bag and baggage, yet with scrip and scrippage,” meaning the purse and its contents (money).
In time the connotation of honorable departure was dropped and the term simply described clearing out completely. “‘Bag and baggage,’ said she, ‘I’m glad you’re going,’” declared Samuel Richardson’s heroine in Pamela (1741). See also KIT AND CABOODLE.