4 Medal Imperial German Stickpin WWI Imperial German

Very interesting 4 medal stickpin. From left, I believe the medals are an iron cross, Prussian combat cross for 1866, Prussian state merit cross and Hindenberg cross with swords for WWI service. If I am correct, this is a very wide time span so the fellow must have been high ranking to still be in service for WWI. If you have input please let me know. These minature stickpin medals are tiny and hard to figure out sometimes. At any rate, a neat set with interesting construction.