Alland'Huy-et-Sausseuil is located some 10 km east of Rethel and 35 km south-west of Charleville-Mézières. The D30 road from Amagne to Écordal passes through the northern part of the commune. The village can be accessed off the D30 via the D14 which passes through the village then continues east to Charbogne. There is also the D43 road from just south of Écordal which passes south through the commune to Saulces-Champenoises. A branch railway line passes through the commune from Lucquy station in the west to the station just south of the village and the line continues south-east to Attigny station. Apart from the village the commune consists entirely of farmland.
La Foivre stream flows south through the eastern part of the commune and continues to join the Aisne south of the commune. There are several other small streams in the east of the commune and the Ruisseau de Saulces in the west.
In 2009 the commune had 247 inhabitants. The evolution of the number of inhabitants is known through the population censuses conducted in the commune since 1793. From the 21st century, a census of communes with fewer than 10,000 inhabitants is held every five years, unlike larger towns that have a sample survey every year.[Note 1]
Charles Batteux (1713-1780) was a clergyman, Translator, Latin scholar, author of scholastic books. Professor of rhetoric. Held a Chair of Greek and Latin philosophy. Member of the Academy of Sciences in 1754.
The French Resistance fighters arrested by the Gestapo at the Chesnois farm in 1944: the Fromentin family (Georges, Georgette, Jean, Lucienne), Paul Sagnet, Blanche Deloche-Sagnet, Charles Lambert, Robert Couvin.
^At the beginning of the 21st century, the methods of identification have been modified by law No. 2002-276 of 27 February 2002 , the so-called "law of local democracy" and in particular Title V "census operations" which allow, after a transitional period running from 2004 to 2008, the annual publication of the legal population of the different French administrative districts. For municipalities with a population greater than 10,000 inhabitants, a sample survey is conducted annually, the entire territory of these municipalities is taken into account at the end of the period of five years. The first "legal population" after 1999 under this new law came into force in 1 January 2009 and was based on the census of 2006.