The Brotherhood of the Four Musketeers
The Three MusketeersThe deep friendship and loyalty among d'Artagnan, Athos, Porthos, and Aramis, expressed through their oath and shared adventures.
increasing
Bearing strength in each event
decreasing
The Oath: All for One, One for All

A Bond Forged in Battle
The Fight
After defeating the Cardinal's Guards together, the four friends swear an oath of mutual loyalty: "All for one, one for all." This oath becomes the foundation of their friendship.
The Meaning
The oath signifies that they will support each other in all circumstances, sharing dangers and rewards. It is a pledge of absolute trust and solidarity.
A Lasting Bond
Throughout the novel, the four friends honor this oath. They risk their lives for one another, share their fortunes, and stand together against their enemies. Their friendship is the emotional core of the story.
Sharing the Diamond's Proceeds

A Common Purse
The Sale
D'Artagnan sells the queen's diamond ring for seven thousand livres. He shares the money equally with his three friends, despite their protests. They use the funds to equip themselves for the campaign.
The Generosity
This act demonstrates d'Artagnan's generosity and his commitment to the brotherhood. The friends have shared dangers, and they now share wealth.
A Symbol of Unity
The diamond, a gift from the queen, becomes a symbol of their unity. It provides for their needs and strengthens their bond. The sale and division of the proceeds is a practical expression of their oath.
The Bastion Saint-Gervais Council

A Secret Meeting Under Fire
The Wager
To discuss their plans to thwart Milady without being overheard, the four friends wager that they can breakfast in the Bastion Saint-Gervais and hold it for an hour. They do so, fighting off Rochellais attacks while talking.
The Discussion
In the bastion, they decide to send letters to Lord de Winter and to Marie Michon. They also plan how to use the cardinal's safe-conduct that Athos took from Milady. The council is a testament to their trust in each other.
A Shared Victory
They return to camp as heroes, their secret safe. The bastion episode showcases their courage, ingenuity, and unbreakable bond. They are willing to risk their lives for the sake of a private conversation.
early in the story, after the fight with the Cardinal's Guards
during the siege of La Rochelle
during the siege of La Rochelle