May God have mercy upon us ...
In the military, we generally had chapels that were designated for other religions. Therefore, those that were primarily for protestant/Catholic use were free to keep their crosses, altar cloths, etc., in view throughout the week.
In general, the rule that chapels are considered non-sectarian is true in the military, but there are also a number of chapels on most military installations, so having them designated for particular use would not be a burden but instead it would be a benefit.
But whosoever shall deny me before men, him will I also deny before my Father which is in heaven.
- King James Bible “Authorized Version”, Cambridge Edition