rad hewer

[GODISHIGH]

i have a rad hewer with the number "br 251" stamped on it and i would like to know what it means. i was told by one that it is a serial number and another has a hewer but says that the number is a batallion number. i have been looking on the internet and found these two webpages and would like to know if this is what this number means

http://www.lexikon-d...BauBtl251-R.htm

http://www.stampsx.c...suche_ort=15843

or could this number mean something else?

thanks

john