Answer:
The evidence that suggests that Benedict Arnold was a brave soldier is the fact that he was a soldier since he was 15 years old.
Step-by-step explanation:
At age 15, Benedict Arnold joined the militias of the Connecticut colony. In that condition, he participated in the army of settlers who marched to Albany and Lake George to support the British troops facing the French invasion from Canada at the Battle of Fort William Henry, at the American theater of the War of the Seven Years.
When in 1776 the Thirteen Colonies proclaimed their independence from Great Britain, Arnold again joined the Connecticut militia and participated in the first battles against British troops. In 1777 he was entrusted with the leadership of the troops of the Hudson River Valley to prevent the penetration of British troops from Canada, which by the river could attack the colonies of Pennsylvania and New York.
While fighting for the Americans he had distinguished himself by his displays of courage and bravery in the capture of Fort Ticonderoga in 1775 and the Battle of Saratoga in 1777.
In 1780, Arnold went over to the British side, betraying the patriots.