The fort is currently closed to the public - though a panel states that visits by appointment can be organised through the Caverne du Dragon museum.
The Fort had been built in 1877 as part of the Séré de Rivières secondary defence line guarding the route towards Paris.
In 1886 the fort was armed with 37 guns and was equipped and staffed for a siege of up to six months.
Her brick and earth work ramparts offered protection to the troops and they lived in reasonable comfort.
However, in 1884 a Frenchman: Eugène Turpin had discovered that if you put picric acid into one of the new styled shells it was much more powerful than ordinary gunpowder. To confuse the Germans he called his mixture melinite because of its colour.
Cannonballs had only become obsolete within the past 20 years, so the French Military wanted to test their new invention. Fort Malmaison drew the lucky number and in 1886 was put to the test against the new shells.
The French were horrified with the power they had unleashed - the Fort's state of the art ramparts had been ripped to pieces by less than 200 test shells.
The only counter-measure was to apply a heaver layer of concrete - and that would cost a fortune.
Malmaison was not included on the upgrades and in 1912 the guns were removed and she was put up for sale. The French abandoned her in 1914 as the Germans advanced - the rapidity of the retreat prevented any real hope of using the fort as a blocking measure.
However, the Germans found that in the static war that followed, the defence works - meager as they were - were more than useful and soon became integrated into their defensive system. The fort not only controlled the way in - it also controlled the way out.
If you have the time, a visit to the Fort de Condé would give you a very good idea as to what Malmaison looked like and how it had been conceived. It is well worth the trip.Fort de Condé
When General Pétain took command of the French troops on the Western Front he inherited a demoralised army.
If Nivelle had been guilty of just one thing it was almost certainly the raising of hopes both within and outside the army.
The French had in fact taken thousands of prisoners and captured a great number of guns as well as a lot of ground - but Nivelle had promised so much more.
Nivelle had promised the breakthrough, he had promised victory, he had promised an end to the war.
The failure of the Nivelle offensive was not the failure to advance, they had done. Its failure was in not ending the war and thereby breaking the will of so many soldiers.
Pétain focused on restoring his soldiers morale. They needed a small scale victory that would give them faith in themselves and more importantly - restore their faith in their commanders
The battle would be well organised with all the tanks, aircraft and shells needed. Casualties were to be kept to a minimum and this time the casualty services would be up to the task.
General Maistre had taken over the 6th Army from general Mangin and it was his sector that was allotted the battle. With just three Corps - the 11th, 21st and 14th they would take the western end of the Chemin des Dames and with it the Fort at Malmaison.
The troops were taken to training areas where they practised their manoeuvres and studied the ground. Better co-ordination was worked out between tank crews and infantry.
2000 guns were brought up (one for every 5 metres of front) and a supply of shells was alloted at 120 000 tons a day.
On the 17th October 1917 the artillery bombardment opened up - 800 heavy calibre shells rained down on the fort reducing the super structure to a crumpled mess.
At 05:15 hours on the 23rd following a final crescendo the troops went over the top. They advanced as they had not done for months, things were going to plan. Objectives were being taken even if after a hard struggle.
The 11th Corps who were charged with taking the Fort took the majority of the casualties but as you have seen from the monuments nearby their solders won through.
554 soldiers from the 4th Regiment of Zouaves charged the fort and by 06:00 hours it was theirs.
As the French paused to prepare their second attack, the Germans thinking they had the French beaten launched a counter-attack. They ran headlong into the second French barrage and were forced back.
On the 25th Pétain called a halt to his operation, he felt he had achieved all that he had set out to do. He had lost about 2000 dead and 14 000 wounded over the three days - mostly from the 11th Corps.
However the Germans had lost their positions, 13 000 prisoners and at least twice the casualties as the French.
More importantly, the loss of this position acted as a lever against the remainder of the German line on the Chemin des Dames. Over the next week the Germans were forced to give up the ridge to the French.
A well prepared and limited attack had rendered untenable a position that Nivelle's full frontal assault had only dented.
On 27 May 1918 during their Spring Offensive the Germans retook the fort (or at least what was left of it) and the remainder of the ridge within three hours. The whirlwind of the attack had been too much for the defenders to stand - as it had been for the British on the Somme.
At 1130 hours on 28 September 1918 the 25th Alpine Chasseurs retook the fort and the Germans were pushed out of the Aisne for good.
From Malmaison continue along the D18 towards Cerny en Laonnois.The panorama at La Royère