The Chorus gives us a picture of the two opposing camps on the night before the battle; there are the whispers of the sentinels, the firelight from each camp, the neighing of the horses, the sounds of armor, some roosters crowing, and clocks striking in two nearby villages. Inside the French camp, the confident soldiers play dice while waiting anxiously for dawn; meanwhile, the English, aware of their small number and of their weakened condition, contemplate the morning's danger. The Chorus describes King Henry's walking from tent to tent talking to his soldiers ("a little touch of Harry in the night"), calling them "brothers, friends, and countrymen." He looks strong and confident, and he is a comfort to his men.
The Chorus then apologizes once again for the inadequacies of the stage and urges his audience to be ready to imagine the battle of Agincourt in their minds.
As before, the Chorus makes another apology for the limitations of the stage and the need for imagination on the part of the audience. In conformance with the Elizabethan tradition and Shakespeare's custom, there is no absurd effort to present a battle on the stage. Throughout Shakespeare's history plays, a few soldiers represent entire armies, but here, where England's ideal king is being presented, Shakespeare resorts to using the Chorus, urging and reminding the audience that they must imagine the two opposing camps at nighttime on the eve of the crucial Battle of Agincourt.
Shakespeare continues to depict the contrasting mood of the two camps. Again, as in the last act, the Chorus informs us that the French are overconfident and high spirited, whereas the English are so dejected that the king himself must wander through the camp, offering encouragement.
In the last scene of Act III, we saw how frivolous the French were with their light-hearted talk of horses, mistresses, and love poetry. Now, Act IV will open by contrasting the situation in the English camp.