Noun : Supposedly impregnable, the fortifications were quickly overrun. ,the fortification of milk with vitamin D; the fortification of wine with alcohol.    From Dictionary.com. 

The fort, by which I mean the series of fortifications, is on the first.    From Wordnik.com.  [Fort Pillow] Reference

Down the right line of the enemy's works all approach to the fortifications is made exceedingly difficult by high bluffs and deep irregular gullies.    From Wordnik.com.  [The Last Assault on Port Hudson] Reference

At the point where the Promenade joins the fortifications is a tower called the "Tour de Papegaut.".    From Wordnik.com.  [The Chouans] Reference

An interesting feature of the fortifications is a narrow gallery contrived high up in the wall to give the defenders head and back cover.    From Wordnik.com.  [UK Commentators] Reference

All have a significant place in history for Indonesians, as the fortifications are the unspoken witnesses of their struggles against the Dutch in gaining independence.    From Wordnik.com.  [The Jakarta Post Breaking News] Reference

He steadfastly refused to be carried to and from the "fortifications" in the rude litter that had been constructed for him, a duplicate of which had been made for her.    From Wordnik.com.  [Nedra] Reference

The fortifications were rapidly turned to face the other way.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

From Montsouris to the fortifications of Montrouge is but a step.    From Wordnik.com.  [The French Immortals Series — Complete] Reference

The brother and sister went out on the road skirting the fortifications.    From Wordnik.com.  [The French Immortals Series — Complete] Reference

There were fortifications at intervals along the line and at the angles.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

The defensible nature of the ground at Corinth, and the fortifications, made.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

They said that Colonel Mallory had set them to work upon the rebel fortifications.    From Wordnik.com.  [The Life of Abraham Lincoln] Reference

This stand by the enemy was made more than two miles outside of his main fortifications.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

All the security precautions of the hard option, fortifications and guards, only go so far.    From Wordnik.com.  [Shark Attacks] Reference

The Union army, beaten but still intact, retreated toward the fortifications around Washington.    From Wordnik.com.  [The thunderstorm and the Battle of Ox Hill] Reference

Chambersburg was a purely defenceless town with no garrison whatever, and no fortifications; yet.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

French and British forces bypassed Iraqi fortifications, charging to within 150 miles of Baghdad.    From Wordnik.com.  [The War Week By Week] Reference

In fact, it's really not a single wall at all, but a tangle of parallel and proximate fortifications.    From Wordnik.com.  [Late Great Wall] Reference

Dover was within the fortifications at Fort Donelson, and, as far as I remember, every citizen was gone.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

Then, like innumerable stars, the first lanterns of the outer boulevards appeared near the fortifications.    From Wordnik.com.  [The French Immortals Series — Complete] Reference

Corinth, and had no expectation of needing fortifications, though this subject was taken into consideration.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

"If you will be guided by me, we should do well to reach the fortifications by way of the Lake of Saint-Mande.".    From Wordnik.com.  [The French Immortals Series — Complete] Reference

The house-tops near the plaza were converted into infantry fortifications by the use of sand-bags for parapets.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

During the night of the 11th batteries were established which could play upon the fortifications of Chapultepec.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

Under all these circumstances I concluded that drill and discipline were worth more to our men than fortifications.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

Sarkozy's veto has become a new Maginot Line, the futile and antiquated fortifications France built to defend itself.    From Wordnik.com.  [Why Turkey Must Get In] Reference

Our fortifications are yet in a state of only partial completeness, and the number of men to man them is insufficient.    From Wordnik.com.  [US Presidential Inaugural Addresses] Reference

Mr. Cornelius's research team found no evidence that border fortifications were keeping illegal migrants out of the U.S.    From Wordnik.com.  [Illegal Immigration to U.S. Slows Sharply] Reference

A thousand mini Green Zones have bloomed on the urban landscape, tormented fortifications of steel, concrete and barbed wire.    From Wordnik.com.  [Baghdad Comes Alive] Reference

The "Saddam line" of border fortifications included ditches that were to be filled with oil and set ablaze to slow allied tanks.    From Wordnik.com.  [Blitzkrieg] Reference

The army then proceeded to envelop Petersburg towards the South Side Railroad as far as possible without attacking fortifications.    From Wordnik.com.  [Memoirs of the Union's Three Great Civil War Generals] Reference

The fortifications of a 16th-century castle stand watch on the enfolding hills, lushly green against a clutch of onion-domed churches.    From Wordnik.com.  [The End Of Innocence] Reference

The bastion before them as yet was unassailed, and its guards seemed less eager to defend it than to observe the fate of the other fortifications.    From Wordnik.com.  [The French Immortals Series — Complete] Reference

While the fine weather lasted, the good people did not weary of admiring the sunsets behind the fortifications, the long days, the bracing country air.    From Wordnik.com.  [The French Immortals Series — Complete] Reference

Just outside the fortifications of Vicksburg, under an oak tree, General Grant had met the Confederate General, Pemberton, to negotiate terms of surrender.    From Wordnik.com.  [The Life of Abraham Lincoln] Reference

I refer to the cost of maintaining a proper army, a proper navy, and suitable fortifications upon the mainland of the United States and in its dependencies.    From Wordnik.com.  [US Presidential Inaugural Addresses] Reference