Hi Bonkers,
A mate alerted me to your post. My Grandad was in Chindit 1943 and Rangoon Jail, where, sadly he died.
Your father-in-law Leslie was in Rangoon Jail after being captured in May 1943, his POW number was 348 in the jail. He was liberated in early May 1945 as part of a group of 400 or so prisoners, whom the Japanese had planned to take out to Siam as the 14th Army closed in on Rangoon. The Japanese let them go when it was obvious they were slowing down their own escape.
I have researched these men for a few years now and have a fair bit of paperwork for you. Also I am literally in the middle of creating a website in their honour, so it is wonderful to meet another family with 1943 connections.
Leslie was in a group of men who were already wounded or ill when Wingate called for the return to India. A group of officers volunteered to take these men back, but none made it home. Leslie is one of I think five that survived Rangoon.
I will pm you now and we can contact each other by email.
Steve