They consisted of three great lines, strengthened by about 150 redoubts, and earthworks Vedras, of various descriptions, mounting some 600 cannon; 1810-11.
A strong earthen rampart, flanked with bastions and redoubts, surrounded the City, its liberties, Westminster and Southwark, making an immense enclosure.
On the north-west front, 203-Metre Hill, in advance of the main line, was occupied by strong semi-permanent works, with trenches and redoubts to either flank; and 174-Metre Hill, 1500 yds.
In front of the centre, the Waterworks Redoubt, a semi-permanent work covering the Port Arthur water supply, and connected by trenches with the four Temple Redoubts a mile away to the west, formed a strong advanced position.
In front of the Perches redoubts, the Bosmont, whence the Prussian engineers began their attack, is now heavily fortified with continuous lineslcalled the Organisation defensive de Bosmont.
In the early morning of the 27th a determined but premature attempt was made to storm the Perches redoubts, which cost the besiegers nearly 500 men.
In 1870 Fort Merxem and the redoubts of Berendrecht and Oorderen were built for the defence of the area to be inundated north of Antwerp. In 1878, in consequence of the increased range of artillery and the more destructive power of explosives, it was recognized that the fortifications of Antwerp were becoming useless and out of date.
The works and town are carefully guarded on every side by redoubts and fortifications, and are commanded by batteries on the surrounding hills.
Nevertheless he had every intention of delivering a heavy and decisive counterstroke when the right moment should come, and meantime his defensive tactics would certainly have full play on this prearranged battlefield with its elaborate redoubts, bombproofs and obstacles, and its garrison of a strength obviously equal (and in reality superior) to that of the assailants.
The formal siege of the Perches redoubts had now been decided upon, and as an essential preliminary to further operations, Danjoutin, now isolated, was stormed by the Landwehr on the night of the 7th-8th January.
Roads had been built and gun positions prepared, and reservoirs made for water; trenches had been dug and strong redoubts constructed at various important points, though the defensive system was not completely finished when the enemy attacked at Caporetto.
That fortress, with modernized permanent works, and a main defence line studded with infantry redoubts farther out and a full interval-organization, had a very considerable perimeter.
Before the rise of the "group" or "Feste" idea - that is, the forts were infantry redoubts for close defense and the fighting artillery was entirely in the intervals.
Unfortunately for the Turks many of the "redoubts" were open at the gorge.
There are also batteries and redoubts facing landward and seaward below this fort; but the other defences have been either razed or dismantled.
Our right flank is over there"--he pointed sharply to the right, far away in the broken ground--"That's where the Moskva River is, and we have thrown up three redoubts there, very strong ones.