Possible Clues:

• A spirit to woo results in engagement for Henry
• A spirit to woo meant victory for Henry
• 'Henry V' battle setting
• Make amorous approaches after a drink — result, engagement
• Opposing the monarch's entourage in battle
• English-French battle
• After a short tribunal joined battle
• Henry V's battle
• Case of abetting defendant here, where Henry won
• Battle in Hundred Years' War