Update to inquiery:
1)Photo of Cpt Brown, from 46th Co yearbook (c attached). A couple of the troops know of him, but did not serve with Cpt Brown.
2)Sherman does show him in his book, Who's Who from Special Forces in Thailand serving with the 46th Co in Thailand.
3)He is not on the CIB/CMB/VNJW roster, nor the SOG rosters
4)He was Mike Murphy's XO on SFT40, in Nong Takoo
5)Reference "A-36", nobody knows of that camp or team, BUT Sherman lists a SFT36 at Nong Takoo? I suspect that Walter was confused about the team he was on.
6)An individual, that was at Nong Takoo, stated there was no AO used there, but could not vouch for other areas in Thailand.
7)There is a VA letter on AO in Thailand
link: VA AO in Thailand letter