The 27th Jäger Battalion, officially called the Royal Prussian 27th Jäger Battalion was a jäger battalion of the Imperial German Army during World War I. The unit mainly consisted of Finnish volunteer
The pioneer company of the battalion returning from a parade in Liepāja (Libau). The company commander riding on the white horse is Lieutenant Basse. The battalion stayed almost a year in Liepāja for special training in 1917 after the Riga Bay period of 1916.