An armoured fighting vehicle (or armored fighting vehicle - see spelling differences) AFV is a combat vehicle, protected by strong armour and armed with weapons, which combines operational mobility, tacticaloffensive, and defensive capabilities. AFVs can be wheeled or tracked. It is not uncommon for AFVs to be simply referred to as "armour" (or "armor").
Armoured fighting vehicles are classified according to their intended role on the battlefield and characteristics. This classification is not absolute; at different times different countries will classify the same vehicle in different roles. For example, armoured personnel carriers were generally replaced by infantry fighting vehicles in a similar role, but the latter has some capabilities lacking in the former. There may also be hybrid vehicles, such as the Stryker family of AFVs; the M1128 Mobile Gun System, an armoured car which mounts a large 105mm gun normally used in tank destroyers, but can theoretically be reconfigured to the M1126 Infantry Carrier Vehicle.