5th Army (France)

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{{Original research|date=November 2019}}

{{Expand French|topic=mil|date=August 2023}}

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{{Infobox military unit

| unit_name = V^e Armée

| image = Cinquième armée.jpg

| image_size = 200px

| caption = Memorial to the 5th Army

| dates = 1914–1918
1939–1940

| country = {{flagicon|France|1794}} France

| allegiance =

| branch = French Army

| type = Field army

| role =

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| garrison =

| ceremonial_chief =

| colonel_of_the_regiment =

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| battles = {{tree list}}

• First World War
• 1st Guise
• 1st Marne
• Battle of the Two Morins
• 1st Aisne
• 2nd Aisne
• 3rd Aisne
• 2nd Marne
• Fourth Battle of Champagne
• Meuse–Argonne offensive
• Battle of Saint-Thierry
• Battle of the Serre
• Second World War
• Phony War
• Battle of France

{{tree list/end}}

| notable_commanders = Charles Lanrezac
Louis Franchet d'Espèrey

| anniversaries =

}}

The Fifth Army ({{langx|fr|V^e Armée}}) was a fighting force that participated in World War I.

On 29 August the 5th Army under Lanrezac won a partial victory at the battle of Guise, delaying the German attack.{{cite book | last=Gregory | first=Adrian | title=A War of Peoples 1914-1919 | publisher=Oxford University Press | publication-place=Oxford, United Kingdom | date=2014 | isbn=978-0-19-954257-4 | oclc=878916387 | url=https://www.worldcat.org/title/878916387 | access-date=2025-05-07 | page=34}} However, Lanrezac became dispirited and was replaced by Louis Franchet d'Espèrey on 3 September 1914.{{cite book | last=Mansoor | first=Peter R. | last2=Murray | first2=Williamson | title=Grand Strategy and Military Alliances | publisher=Cambridge University Press | publication-place=Cambridge New York | date=2016-02-09 | isbn=978-1-107-13602-1 | page=113}} Under its new commander, Louis Franchet d'Espèrey, it participated in the defensive actions and subsequent attacks which resulted in the victory at the First Battle of the Marne in 1914.{{cite web | title=World Wars: Battle of the Marne: 6-10 September 1914 | website=BBC | date=2011-03-08 | url=https://www.bbc.co.uk/history/worldwars/wwone/battle_marne.shtml | access-date=2025-05-07}}