- Secure arms and ammunition essential for the ongoing struggle with New York authorities: The Green Mountain Boys were involved in a territorial dispute with New York over the land that is now Vermont. They needed a reliable source of weapons to defend their territory and resist the New York militia's attempts to assert control.
- Gain strategic advantage: Fort Ticonderoga was a key military stronghold that controlled access to Lake Champlain and the surrounding region. By capturing the fort, the Green Mountain Boys could effectively block British supply routes and disrupt their military operations in the area.
- Demonstrate their military strength and resolve: The Green Mountain Boys wanted to show the British and New York authorities that they were a force to be reckoned with. A successful assault on Fort Ticonderoga would serve as a powerful statement of their determination and unity, increasing their bargaining power in the ongoing negotiations over the Vermont territory.
- Inspire other colonists to resist British rule: The Green Mountain Boys' actions could serve as an inspiration for other American colonists who were discontented with British rule. By demonstrating that it was possible to successfully challenge British military might, the Green Mountain Boys could contribute to the growing movement for independence and resistance against British authority in the colonies.
- Secure supplies and equipment: Fort Ticonderoga contained valuable military supplies and equipment that the Green Mountain Boys could use to strengthen their position and continue their resistance against New York.