Balteus
A Ride for the Sword
A Roman soldier needed his sword close but his hands free. One answer was the balteus — a leather strap worn over one shoulder and across the body, with the gladius and its scabbard hanging from it at the hip.
It works like a modern shoulder strap: it carries the weight and keeps the sword in the same place every time, so the soldier can find it without looking.

How Was the Sword Attached?
Roman scabbards had metal rings down their sides. Short leather straps linked those rings to the balteus, letting the sword hang just below the waist.
An ordinary first-century soldier usually wore the gladius on his right — which looks backward until you remember the big shield on his left arm. The blade was short enough to draw across the body with the right hand without shifting the shield. Centurions often wore theirs on the left instead. There’s more on that on the Gladius page.
Was It Decorated?
It didn’t have to be plain. Roman soldiers liked their kit to look the part, and surviving fittings show sword straps with brass plates, buckles, and studs. How much a given soldier had came down to time, place, and what he could get.
Balteus or Cingulum?
Easy to mix up. The cingulum is the belt around the waist; the balteus goes over the shoulder. In the first century both could be part of how a soldier carried weapons, and the setups shifted over time.
A strap over one shoulder, doing a job every soldier needs done: keeping the sword exactly where the hand expects to find it.