 Carbines found increased use outside of standard cavalry and infantry, such as support and artillery troops, who might need to defend themselves from attack but would be hindered by keeping full-sized weapons with them continuously; a common title for many short rifles in the late 19th century was "artillery carbine".As the rifled musket replaced the smoothbore firearms for infantry in the mid 19th century, carbine versions were also developed; this was often developed separately from the infantry rifles and, in many cases, did not even use the same ammunition, which made for supply difficulties.A notable weapon developed towards the end of the American Civil War by the Union was the Spencer carbine, one of the very first breechloading, repeating weapons.