My parents didn't want me playing with toy soldiers from WWII, so they bought me sets of knights. These were the Britains Limited figures - a wide variety of armor types, so not all of them had Crusader tabards. My logic in playing Knights In Armor was that the ones with the crosses on their tabards were physically stronger.
Years later, I got into medieval history, and found out that was one of the folk beliefs in the actual Crusader armies.
A childhood belief about wars

others believed things like this
- When a soldiers went AWOL in the movies, I thought they physically climbed over "A Wall".— D Rumsfeld
- I was convinced that Gorilla soldiers in Vietnam in the 70's were real Gorillas attacking other Soldiers.— Mario
- My parents told me that when the ice cream van was playing music, it means he's run out of ice cream :(Anon
- I used to believe that when my fish died and floated to the top, it was playing dead.— Alycia T
- I was told as a kid that when it thundered, God was playing basket ball. LOL! — Tony
- i used to believe that when there was thunder and lightning god was playing bowling at a disco— georgia