In 1815, the former Reserve regiments, Legions, and Freikorps volunteer formations from the wars of 1813–1814 were in the process of being absorbed into the line, along with many Landwehr (militia) regiments.
Under 1815 var de tidigare reservregementena, legionerna och frikårerna från krigen 1813-1814 absorberade i linjeregementen, tillsammans med många Landwehr-(milis)regementen.