In the mid-19th century, Austria comprised a heterogeneous, multi-ethnic empire consisting of the Austrian or 'German' area; the Hungarian area; the Military Border; and the Kingdom of Lombardy-Venetia. The diverse nature of the empire made it difficult to create a unified and up-to-date military system, especially with remnants of feudalism still strong in some provinces. This book examines the Line infantry, Grenz infantry (Border troops) and Jägers (riflemen) that formed the Austrian infantry.