Original sentence: His account detailed 57 hours spent hiding from the Viet Minh before a three-day march without food or navigational aids; encountering native tribesmen who provided food and a pony with which he reached the French forces
Edited sentence: His account detailed 57 hours spent hiding from the Viet Minh before a three-day march without food or navigational aids and then encountering native tribesmen who provided food and a pony, with which he reached the French forces