Bomber aircraft aremilitary aircraft primarily designed for air-to-surface attack, on either ground or sea targets. This list does not includeairships used for bombing and does not aim to include attack aircraft primarily intended for different roles. There are bound to be some overlap in roles and designs and somemultirole combat aircraft could appear in more than one list. There are separate lists offighter aircraft,ground attack aircraft andtrainers. This list does not includefictional aircraft .