Unique Lieutenant Shooting Badges

This time I got a treat for you. I picked up five shooting badges (3 engraved) at a local fleamarket and when I got home I looked at them and saw that they belonged to the same Lieutenant! What makes them unique? Well you can sort of follow the history of this soldier through these. For example on the first badge it says second lieutenant and the later ones just lieutenant so we know he gained ranks. On top of all they are old aswell!

The complete set of five only three engraved other two blanks.

Front says: Oscar duke of Östergötland colonel in royal first life grenadier regiment

Back says: Royal first life grenadier regiments officer corps target shooting union

Engraving: Second Lieutenant E. Bille 6 hits in the rotating plane with revolver 1901 14/7 

Engraving: Lieutenant E. Bille 5 hits in the figure with revolver 1903 30/9

Engraving: Lieutenant E.Bille for 40 points with rifle 1904 11/9