I'm a bit behind with my posts here, these figures were finished a couple of weeks ago.
Russian Jägers were light infantry who were known for being superior marksmen and agile fighters. They could form line units (indeed I intend on adding a Jäger Line unit to my force at a later date) but their primary use was skirmishing in open order. In many ways, their uniform was very similar to that of regular line/musketeer units. The main visible differences were black leather belts rather than the white of musketeers and grenadiers, and dark green breeches rather than white. These models all wear the soft forage cap which was used, as far as I can tell, by most branches of infantry. Indeed North Star (who make these figures) describe them as Musketeers/Jägers so they could be used for either type, just with different colour belts showing the difference.