Definition
A carbineer (also spelled carabineer or carabinier) was historically a soldier armed with a carbine, a type of short rifle. They were often mounted troops or light infantry. Think of them as the snipers or designated marksmen of their day. They needed to be skilled marksmen and quick on their feet (or hooves). Their carbines allowed for greater mobility than standard rifles. It's like being a specialist in a video game, focusing on ranged combat.