Hello Diane and Mike,
What a surprise to stumble upon your Message Board conversation while researching the Crimean War's Turkish Contingent.
I am also researching a participant - Major Richard Pattinson. He was born in Canada, serviced in India, Afghanistan and Canada before retiring. Soon afterwards he joined the Turkish Contingent. Afterwards he was appointed Governor of Heligoland. You can see more about him on my website: http://www.michelhoude.com/Pattinson/Index.html
I fear that I probably cannot be of much help to you in your research but I am willing to share whatever I have been able to find.
Is there a chance that you have come across his name in your research?
FYI - I'm retired from the Fed Civil Service and live in Toronto. My goal is to wind up my research on Major Pattinson this year and publish what I have found but I do not know where.