You know..............on my very first ship in the Navy (USS CONCORD (AFS-5)), which I served on from 1983 until 1986, we had only 1 chaplain, and he had to hold services for not only Catholics, but Protestant and Lutheran.
He held 3 different services per Sunday, and each one was different.
Wouldn't it have been easier on him if he had a religion that he preferred (say............Catholic), and then pressured everyone on the boat to become Catholic, even though their belief system was different?
Then.................he could have reduced his services to 1 per Sunday, and had a much easier time.............however.....................he would have been stomping all over the religious freedom that the Navy allows.
Check out how many different religions the Navy recognizes sometime. I was a Personnelman for 20 years, and there's over 150 different codes that are put on a pg. 2 (Record of Emergency Data) to signify what religion someone is.
The job of a chaplain is to minister to the spiritual needs of those in the command, not to be converting others to their own belief system.