Cluster munitions such as BL755 ( extensively used in Yemen at present ) were designed in the 1970s to attack massed Warpac tank formations pouring across the G

Cluster munitions such as BL755 ( extensively used in Yemen at present ) were designed in the 1970s to attack massed Warpac tank formations pouring across the German plains. As a consequence they usually contain a high proportion of shaped-charge bomblets which can quite easily penetrate several inches of concrete. Brick and roof tiles don't stand a chance. Even the shrapnel from the fragmenting jacket can penetrate steel plate.