The northern pass to the capital is perilous, and has been easy to defend on previous incursions. This is because siege weapons must be unassembled and reassembled in order to lay siege on its defenses. While the siege weapons were being assembled the royal cavalry would be called to swoop down on the enemy; however, in this case the royal cavalry are needed elsewhere and the defenders were hard press by the seemingly endless waves of enemy troops. Reinforcements finally arrived to join the defenders as the siege weapons were assembled and moving with the final assualt
(The Reinforcements,upon arriving to the front)
Sir Godwine: Good heavens, They come in an overwhelming force!
Commander: They have come at us before, but never in such strength
Sir Godwine: Their numbers are great, but the Kings orders must be carried out! We make our stand here!