During World War II, passing on messages that the enemy could not interpret was very important. Special codes were used by the allied forces (Britain and America), but eventually, these codes would be cracked, and that spelled trouble.
To solve this problem, Navajo Indians were enlisted in the Marine Corps to become “code talkers” on the front lines. The Navajo Code Talkers turned out to be the only code that was never cracked during World War II.
