Despite brief moments of comedy, the overall mood of the play is tense and combative, emphasizing the high-stakes nature of war. Characters are frequently depicted as being on edge, nervous, and uncertain about the outcome of the conflict. As a result of this tense atmosphere, they are prone to bursts of senseless fighting with one another. Even King Henry, when disguised as a soldier, almost gets drawn into two separate fights, and his arguments with the French Dauphin, conveyed by a messenger, quickly descend into violent threats.
Prior to the battles at Harfleur and Agincourt, there is a particularly palpable sense of tension and anticipation as the English and French armies prepare for combat. The mood is one of urgency, as characters struggle to overcome their fears and doubts and prepare themselves for the coming conflict. Despite his confident speeches, King Henry expresses private reservations about the outcome of the war, seemingly preparing for death at various points, even imploring God not to punish him for his father’s sin in unlawfully “compassing the crown,” or, in other words, deposing the rightful King Richard II.
This tense and combative mood reaches its height during the Battle of Agincourt, as the English and French soldiers finally clash on the blood-soaked battlefield. The play vividly portrays the chaos, confusion, and violence of war, and characters are frequently shown struggling to survive in the midst of the carnage. The play’s dark mood is exemplified by a request made by the French messenger, Montjoy, to collect the bodies that “Lie drowned and soaked in mercenary blood” from the battlefield before they are mutilated beyond recognition by cavalry.