Marshall was in the military during the American Revolutionary War

Thomas Marshall and Mary Randolph Keith gave birth to John Marshall in Germantown, Virginia. Both a politician and a soldier, Thomas Marshall. With eight sisters and six brothers, he was the oldest. He received the most of his education from his father at home before spending one year at Campbell Academy. During his teenage years, he was passionately smitten with George Washington, and under his influence, he decided to enlist in the army to fight in the American Revolutionary War. In 1755, the American Revolutionary War began.

John Marshall joined the Culpeper Minute Men as a Lieutenant when he was 20 years old, which is an interesting detail about him. He then enlisted in the Continental Army and participated in a number of crucial conflicts there. John Marshall was first inspired by George Washington during this conflict. Because Washington and Marshall's father were close friends, Marshall was particularly moved by Washington's leadership and tenacity.