Train.

About Train

In military contexts, a train is the logistical transport elements accompanying a military force. Often called a supply train or baggage train, it has the job of providing materiel for their associated combat forces when in the field. When focused on provision of field artillery and its ammunition, it may be termed an artillery train. For sieges, the addition of siege engines to an artillery train was called a siege train. These military terms predate and do not imply a railway train, though railways are often employed for modern logistics and can include armoured trains.