counterwork

It is possible that the fieldwork about 100 metres east of the castle was established at that time as a counterwork (Gegenbefestigung).

Let it be to abjure thy malice; to counterwork this hellish stratagem; to turn from me and from my brother, this desolating rage!

That Siege of Mentz is become famed;--lovers of the Picturesque (as Goethe will testify), washed country-people of both sexes, stroll thither on Sundays, to see the artillery work and counterwork; 'you only duck a little while the shot whizzes past.'