One of these fortifications was Fort Dinwiddie, which was to be built on the Jackson River.

 After the Battle of Jumonville Glen, George Washington proposed a series of frontier fortifications to protect settlers east of the mountains from French and Indian attacks. One of these fortifications was Fort Dinwiddie, which was to be built on the Jackson River.

Captain Thomas Lewis was initially tasked with building Fort Dinwiddie. He began construction in the summer of 1755, but he was relieved of his command in September of that year. The reasons for his relief are unclear, but it is possible that he was unable to complete the fort on time or that he was not providing adequate protection to the settlers in the area.

Despite Lewis's removal, Fort Dinwiddie was eventually completed and served as a valuable frontier defense during the French and Indian War. It was also used by the Virginia militia during the American Revolution.

It is interesting to note that Washington's proposal for a series of frontier fortifications was ahead of its time. The British government was reluctant to invest in such fortifications, believing that they would be too costly and ineffective. However, Washington's foresight proved to be essential in protecting the settlers of Virginia from French and Indian attacks.

Lewis's removal from command of Fort Dinwiddie is also a reminder of the challenges of frontier warfare. The British government was often slow to respond to the needs of the settlers, and the militia was often poorly equipped and trained. As a result, the settlers were often left to fend for themselves against the French and Indians.

Despite these challenges, the settlers of Virginia persevered and eventually emerged victorious in the French and Indian War. Fort Dinwiddie played an important role in their defense, and its construction was a testament to the determination of the people of Virginia.