Writing a story is like constructing a body or anything at all. There needs to be a structure to it or it will crash to the ground.
Those recruited were often told they had been chosen to form a parachute unit. This was only half a lie. Indeed, the secrecy of the mission was so vital that the windows of the trains were blacked out so they didn’t know where they were going until they got there. They were, however, parachuting within 48 hours of arriving at the fort.
There have been very interesting stories in support of the Madoc story. In 1810 John Sevier, the first governor of Tennessee, in a letter to a friend about a conversation with an old Cherokee chief about a group of men who called themselves “Welsh” that built forts along the Alabama River for protection against the ancestors of the Cherokee.