Noun
(military) Initialism of armoured vehicle-launched bridge.
An armored vehicle that deploys a bridge in a motorized/automated manner.
A bridge deployed by such a vehicle.
Source: en.wiktionary.orgAn armoured vehicle-launched bridge (AVLB) is typically a modified tank hull converted to carry a bridge into battle in order to support crossing ditches, small waterways, or other gap obstacles. Source: Internet
Once the span has been put in place, the AVLB vehicle detaches from the bridge, and moves aside to allow traffic to pass. Once all of the vehicles have crossed, it crosses the bridge itself and reattaches to the bridge on the other side. Source: Internet
The AVLB is usually a tracked vehicle converted from a tank chassis to carry a folding metal bridge instead of weapons. Source: Internet
Thus, "armoured engineer vehicle" used generically would refer to AEV, AVLB, Assault Breachers, and so on. Source: Internet