Barzy-en-Thiérache is located some 40 km south by southeast ofCambrai and 40 km northeast ofSaint-Quentin. The Route Nationale D1043 fromBergues-sur-Sambre toLe Nouvion-en-Thiérache passes through the southern tip of the commune but does not provide direct access. Access to the village and the commune is by road D261 running north-east from the D1043 continuing north-east as the D262. The D664 also runs north from the village toLe Rejet-du-Moulin. The eastern border of the commune is also the border betweenAisne andNord departments. There are four hamlets in the commune other than the village: La Justice, Etreux, Mon Idee, and La Haie Long Pre. The rest of the commune is entirely farmland.[3]
TheSambre river runs from east to west through the commune and the village fed by theRuisseau du Vivier Bare. The Sambre river continues west to join theSambre–Oise Canal.[3]
In 1153 the name of the village wasVilla que dicitur Baisis. It then becameBarisis in 1227. The first name was given asBaisse for the neighborhood. The second name wasBarri then becameBarrié thenBarrière. This tends to demonstrate the frontier character of the village with the Sambre running through it. The part of the village north of the Sambre was under the stewardship of the Landrecy family (County of Hainaut). The southern part of the village was under the stewardship ofLaon and the lordship ofLesquielles (Thiérache-Picardy).
In 1956 the name of the commune wasBarzy which then changed toBarzy-en-Thiérache.
On 7Thermidor Year 2 (August 1794) the enemy invaded the village and there was one civilian casualty - Joseph Licking.
Towards the end of theFirst World War, on 5 November 1918, the advance of French and British troops was stopped in a bloodbath 500 metres from the village (25 soldiers and 2 civilians were killed). On 6 November, after a violent French bombardment, the 73rd Infantry Regiment and the 59th Algerian Riflemen liberated the commune at 5.30am and released nearly a thousand inhabitants and refugees. For these events, the village was decorated with theCroix de Guerre 1914-1918.
The official status of the blazon remains to be determined
Blazon: Party per fesse, at 1 chevronny in Or and sable; at 2 party per pale first argent with three lions gules, second azure with three fleurs de lis of Or 2 and 1; over all debruised by a fesse wavy Vert fretty of Gules.
TheWar memorial at Rue Neuve (1921)[14] was the work of Coulon, a marble sculptor fromLe Nouvion-en-Thiérache in 1920–1921. The monument mentions, in addition to the victims from the village, the participation of the Algerian Riflemen who died to liberate the commune. There is a second memorial in the cemetery with a difference of three names which could not be agreed.
TheParish Church of the Assumption (1705).[20] It was rebuilt in 1705 with an olderchoir. There is a grotto of Lourdes dating from the 20th century. The Church contains several items that are registered as historical objects: