I cannot help with your enquiry but the Royal Marines tune "Sunset" is appropriate. I thought you might be interested in my experience on 9.11.08. I deputise at a church where the minister is very "green" in the environmental sense and is also a pacifist, very much so. I offered to play "Last Post " and "Reveille" on the organ, but I was informed that under no circumstances would he permit anyhing with military overtones. We also missed out "God save the Queen", presumably because of the line "send her victorious". Likewise we missed "O God our help". However, he did allow me to play "Crown Imperial" afterwards.