Hi,
I noted your request for information on John EISLER - old request but noting lost as I was working on his profile tonight anyway.
I have carried out quite a bit of Kenya Police research on him as part of my general colonial police interest - My project on him and many others is ongoing, but I am happy to help.
His father Percy was born in Hungary, John joined the Indian Army as 2nd Lt in Oct 1943, serving in Burma in WW2 (possibly later in Singapore) with the 1st Punjab Regiment, still noted as serving in April 1946. I have all his Kenya Police dates of service and postings, he was one of the first two new arrivals to go into to Special Branch. His hobbies in Kenya were Polo (obviously picked up from the Indian Army) and yachting. I still have him recorded as serving up to 1963 early 1964 as Superintendent in Mombasa.
Regards - Mac