The boats that transported King Henry V's army to France took 1-2 weeks to cross the English Channel, arriving at Harfleur. Once there, a disease called the flux struck both the British army and residents, causing fever, diarrhea, and intestinal bleeding. Many died, though the siege of Harfleur continued. While the video showed horses stopping due to arrows, they actually stopped upon noticing stakes placed in the ground by the French. The French celebrated before the battle, expecting an easy victory due to their vast numbers, but their huge army could not fit on the field and was clumsy, allowing the smaller British force to defeat them.