Military Monday - Lawrence S Wisner Army

I recently came across this photo of my wife's great great grandfather, Lawrence S Wisner. This photo is significant because until it was found we had no knowledge that he was in the military. On the back of the photo it says it was before the Spanish American War. That war was in 1898. Lawrence was born in 1870 so I estimate the photo to be around 1890 to 1895. Lawrence is the tallest dude on the far left.