Salvation Army and the brass band I think it is a tradition to have a Brass Band in almost every church in the Salvation Army. I see them performing on many occasions like Easter Sunday and Christmas. Here is a sample image (source):



Another image (source): 

What is the importance of Brass Band in the Salvation Army? 

Is it compulsory for a Salvation Army church to have a brass band?
The primary purpose is to serve as an instrument to proclaim The Gospel of Jesus Christ. All other goals of the band are considered "Proper" when their ultimate goal is observed.
The brass band may be seen as an evangelical tool to generate a spiritual response by helping to set the mood &amp; enhancing a spiritual message.
Member retention. Many members were introduced through to the Salvation Army through the brass band, &amp; some may have strayed if not for their attachment to the band.
Drawing attention &amp; Publicity for fundraising
Christian fellowship for players


The brass bands also seem to be more popular in the United Kingdom than in the United States.

Here is some more information about the Salvation Army Brass Band :


Some history &amp; information
About the International "Staff" band of the Salvation Army (The top Salvation Army band)
A 1932 "Appreciation" flier (Back than, the band was called "Callender's Band")
The Wikipedia article


I hope this little bit of information was helpful.