re. Church, not Church Parade:
at JHQ Rheindahlen where I totalled 9 years in several postings, there were three churches for the various persuasions. There were no parades as such, but Battle of Britain and Remembrance Day were very well attended by all ranks, and in uniform. "Ordinary" Sundays were also well attended and some wore uniform. Because it was a multi-service and multi-national "station"/ "garrison", a wide variety of uniforms could be seen.
Major occasions were followed by a family curry lunch in the Mess.
[And wives wore hats, which I loved!]