east african chaplains department

[natal01]

I bought a pair of brass shoulder titles recently but didn't know what they were other than they were east african circa WW2. A little head-scratching and I decided that EACD stands for East African Chaplains Department. Mr Google tells me that there was such a unit and I guess that it was made up of local clergymen who joined the forces.
Does anybody know anything about the EACD and did they wear the normal commonwealth clergy cap badges ?
Thanks
Mike