Galahad, Bors the Younger, and Percival achieve the Grail... source: http://en.wikipedia.org/wiki/Bors
They went on quests. They found the Holy Grail. They protected Camelot. And in Lancelot's case... He stole King Arthur's girl.
the crusades were to rescue christian holy items and land the first was to regain the holy land the others were to storm places were they belived the arabians were hiding the holy grail and such.
The crusaders
The Knights Templar were the most powerful military monastic order which took part in the Crusades. The Knights Templar were formed from several groups of knights by Hugh de Payens for the express purpose of protecting Christian pilgrims in the Holy Land.
The Holy Grail.
In Arthurian legend, the three knights commonly associated with finding the Holy Grail are Sir Galahad, Sir Percival, and Sir Bors. These knights were considered the most pure and worthy of King Arthur's knights, and their quest for the Holy Grail symbolizes their spiritual purity and devotion to God.
The Holy Grail
In some versions of the legend, King Arthur and his knights search for the Holy Grail, but finding it is often left ambiguous or open to interpretation. The quest for the Holy Grail is a central theme in Arthurian legend but the outcome varies across different versions of the story.
It
win him and his knights honor
The Knights Templar were believed to possess and protect several holy artifacts, including the Holy Grail, the Ark of the Covenant, and the Shroud of Turin. These artifacts were said to hold immense religious significance and power.
The knights who say ecky ecky ecky ftang rooboing rousa
King Arthur, Merlin, the Knights of the round table, Camelot and the Holy Grail.
Galahad, Bors the Younger, and Percival achieve the Grail... source: http://en.wikipedia.org/wiki/Bors
He set his Knights of the Round Table the quest to find the Holy Grail.
I've read all knights left to search for the holy grail, because it is the biggest quest, and the most honorable