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Kurier KastelnoViscount, French divisional general.
Date of Birth: 24.12.1851
Country:  France |
Content:
- Early Life and Education
- Military Career
- Ascension through the Ranks
- World War I
- Defense of Nancy and the "Race to the Sea"
- Command of the Centre Army Group
- Post-Champagne Offensive
- Later Career
Early Life and Education
Vicomte Antoine de Castelnau, a French army general, hailed from an aristocratic lineage. He received his education at a Jesuit college, the military school of Saint-Cyr in 1870, and the prestigious École Supérieure de Guerre in 1880.
Military Career
Assigned to the infantry after graduation, Castelnau served in the Franco-Prussian War of 1870-1871. He notably fought under General Antoine Chanzy in the Loire Campaign as part of Léon Gambetta's army. Throughout his career, he served exclusively within France.
In 1896, Castelnau was transferred to the Ministry of War, where he became the head of its 1st Bureau (Organization and Mobilization of the Army) in 1897. His reputation as a devout Catholic put him in disfavor with the Minister of War, Louis André.
Ascension through the Ranks
Despite the obstacles, Castelnau rose through the military ranks, commanding the 37th Infantry Regiment in 1900, a brigade in 1905, and a division in 1909. In 1911, he became the first assistant to the Chief of the General Staff, General Joseph Joffre. Castelnau played a significant role in developing the strategic deployment plan in the event of war with Germany, known as "Plan XVII."
World War I
Role in the Marne OffensiveWith the outbreak of World War I, Castelnau was appointed commander of the 2nd Army, consisting of over 323,000 men and 800 artillery pieces. Alongside the 1st Army under General Dubail, he launched an offensive against Saarebourg, which was defended by the German 6th Army. The offensive faced stiff resistance, but Castelnau eventually captured Saarebourg on August 18-20, 1914.
Defense of Nancy and the "Race to the Sea"
In the German counteroffensive of August 26-28, Castelnau's 2nd Army held its ground, effectively protecting Nancy and the right flank of the main Allied forces engaged in the Battle of the Marne. Later in the conflict, Castelnau commanded troops between the Oise and Somme rivers during the "Race to the Sea."
Command of the Centre Army Group
On June 16, 1915, Castelnau took command of the newly formed Centre Army Group in Champagne. He directed the offensive in Champagne from September 25 to October 15, which ultimately failed to achieve its objectives. Despite heavy casualties, Castelnau's forces successfully repulsed the German offensive on the heights of Grand-Couronné, ensuring the safety of Nancy.
Post-Champagne Offensive
In December 1915, Castelnau was appointed Chief of Staff to the Commander-in-Chief of the Armies of the North and Northeast. However, due to political intrigues, his role was largely limited to representing General Joffre at official events. After General Robert Nivelle replaced Joffre in January 1917, Castelnau was dismissed from his post. He was subsequently sent on a diplomatic mission to Russia.
Later Career
Upon his return, Castelnau was appointed Commander of the Eastern Army Group in March 1917, a position he held until the end of the war. After the Armistice, he became president of the Commission for the Establishment of War Cemeteries.
From 1919 to 1923, Castelnau served as a deputy in the National Assembly for Aveyron and chaired the military commission. In the 1920s, he played a prominent role in nationalist organizations and served as the president of the "Patriotique League."
