[James A Pratt III]

The politician who was assassinated by a lone gunman was Jorge Eliecer Gaitan whose assassination started a 10 year civil war called the violencia. German WW I ace Herbert Boy moved to Columbia in 1924 and helped set up the Columbian Air Force.

Robert Scheina has books "Latin American Wars" 2 volumes the 2nd volume deals with the 1900s.