The American Revolution was a war of movement over great distances. Timely intelligence regarding the strength and location of the enemy was vital to the commanders on both sides. Washington gained his early experience in intelligence gathering in the wilderness during the French and Indian War. By the end of the American Revolution, Washington had become a skilled manager of intelligence. He sent agents behind enemy lines, recruited tory intelligence sources, questioned travelers for information, and initiated numerous espionage missions. Many heroic patriots gathered the intelligence that helped win the War for Independence. Their duties required many of them to pose as one of the enemy, and often incur the hatred of friends and neighbors. Some gave their lives in helping to establish the new American nation. It is possible that without Washington's intelligence service, American independence might not have been won.