UMM let's see, there's history, current events, music obviously since this was a choral performance, civics, speech, english (write a paper about the experience) for starters.
A few years later I went with my father to the Memorial Day Parade on Fifth Avenue. The parade was led by three men who, to my young eyes looked like three very, very old guys in very raggedy uniforms. The parade was slow going and these three were followed by the West Point cadets. When they were in front of us my father and all the men close to us came to attention and saluted. I asked my Dad who they were and he said "They are the only living veterans of the Civil War". To this day I still read about the Civil War. Brianna was fortunate to attend this event. She will remember it and probably learn from it in some way, particularly regarding what happened to her.