The symbolism of the five crosses has been explained in a variety of ways. Here are a few:

The five crosses represent the five wounds Jesus received on the cross. The large center cross represents the wound in Jesus' side while the four smaller crosses represent the wounds he received in his hands and feet. The large center cross represents Jesus and the four smaller crosses represent the four Gospel writers. The four smaller crosses represent the four corners of the earth to which the gospel is being taken or for which Jesus died. The five crosses represent the five nations active in the Crusades: Great Britain, France, Germany, Italy and Spain. The five crosses represent the five principalities of the Latin Kingdom of Jerusalem. The Jerusalem Cross was employed as an emblem by the Crusaders. Godfrey de Bouillon, who became the first ruler of Jerusalem after it was captured from the Moslems in 1099, wore the Jerusalem Cross as his symbol.