Sounds like it could have been the Children's Crusade (or something along those lines) https://en.wikipedia.org/wiki/Children%27s_Crusade https://en.wikipedia.

Sounds like it could have been the Children's Crusade (or something along those lines) https://en.wikipedia.org/wiki/Children%27s_Crusade https://en.wikipedia.org/wiki/Children%27s_Crusade