World War II

I am looking for information on the 40 and 8 soldiers of the american legion during WWII. There was something about there being 40 men and 8 horses on a train escaping..My grandfather says he was part of this and I recieved his uniform after his death.. I am very curious about this and if anyone could give me some information I would be truly gratefull... Thank you and God Bless..
Rhonda

P.S My Grandfathers Troop # Was #666, which seemed strange but that is what is on the lapel of his coat....