More than 200 university students had participated in the so-called Boy Scout training – they dressed in Boy Scout uniforms during training, and they became the officers of the Finnish Jäger Troops. This group was expanded by extensive recruitment in the autumn of 1915 and spring of 1916. The goal was to increase the unit to 1,200 men, including artillery and pioneers. As the new recruits included working class young men and farmers as well as sailors, not so many of them knew German. It was therefore necessary to create military guide books in Finnish, and a command vocabulary was created.