Do church chiors/ attendees sing the Battle Hymn of the Republic in their worship services now days?
Yes. “The Battle Hymn of the Republic” is an American patriotic anthem written by Julia Ward Howe in November 1861 and first published in The Atlantic Monthly in February 1862 that was made popular during the American Civil War. A version of the song is even included in Catholic Hymnals: http://www.ocp.org/songs/128 With love in Christ.