Mark, I am not sure that I agrre that it is not an Austro-Hungary Army uniform. There is information in the family that the brothers served in the army and no indication of membership in a local para-military or nationalist organization. They lived in Holic (CZ) now Slovakia. I have attached a file with the hat insignia. - it may help. The collar numerals "4" and "301" are what I have focused on to hopefully identify a unit. IR72 would have been their local army unit. Al,