It was an unlikely trio accompanying the wizards as they went into the duke's tower from the west entrance: the first in command, the second in command, and an apprentice.
Commander Lothian decided to go because his experience and unbelievable strength would be an asset to the group. Sir Williamson joined the group because he felt he had something to prove since word had spread that he might be able to take the duke's tower after the war and command the Knights of Chemois.
Henry, however, only joined because he didn't want another knight with more experience than him to lose their lives in the tower when their talents could be used elsewhere and for much longer. He believed he could face the tower because he had before.
