On December 13, 1636, which colony organized its militia into three regiments?

• A. Massachusetts Bay Colony
• B. Virginia Colony
• C. Plymouth Colony
• D. New Hampshire

Answer: (A)

In colonial militias, turning loose, ad hoc armed groups into organized units with named regiments shows a move toward centralized planning and scalable defense. In 1636 the Massachusetts Bay Colony formalized its militia by dividing it into three regiments. This gave them clearer regional command, standardized training, and faster mobilization—a crucial step as settlements grew and tensions rose on the frontier, including the lead-up to conflicts like the Pequot War. That structured approach to defense was characteristic of Massachusetts Bay at the time and helped explain why this colony organized into three regiments. Virginia, Plymouth, and New Hampshire did not adopt this three-regiment organization in that same period, so the Massachusetts Bay Colony stands out as the correct example.