France

History
Germany Declared war on France on August 3rd 1914 as part of Schlieffen plan the day after they began their march into Belgium toward Paris. However the first clashed between France and Germany occurred on the Franco-German border as a part of Plan XVII, this became known as the Battle of the Frontiers. However the French employed outdated tactics, wearing bright colors and marching into battle in mass groups. The German machine guns and artillery simply mowed down the French charges and on the first day of battle, killed over 27,000 French soldiers. It wasn't long before the French were forced to retreat, not only because the losses in the Battle of the Frontiers, but also the Germans had broken through the Belgian and British forces and now were heading along the shortest route to Paris. The Germans continued a seemingly unstoppable advance until the Battle of the Marne, only 40km (25 miles) from Paris. It was here the French and the British finally stopped the German offensive and pushed them until they were 100km away from Paris, were the German high command gave the order to dig and defend. In response the French and British forces did the same. It was here the front line would stay for nearly 4 years. Attempts to break the Stalemate included the "Race to the Sea" in November 1914. The Champagne Offensive in December. France also did not participate in the famed Christmas Truce as they, understandably, were not willing to socialize with the enemy that had invaded, and remained, in their country.

Campaign
Avoid the mistakes of the French generals, such as charging German positions en masse across wide open fields. Instead it would be far wiser to instead use the revised tactics such as Concentrated attacks on areas of tactical importance, however you must also be sure to reinforce as a fast as possible to avoid being routed by a counterattack. It would also be advisable to issue the revised uniform as early as possible to avoid making easy targets for the enemy. France is also one of the Pioneers of Aviation and the armored vehicle, these advantages should obviously be utilized.

Multiplayer
A fairly balanced country, with both Trained infantry(although not as good as Britain's) and militias, both bad prototype armor like the Saint Chamond and very successful armor like the FT 17. However their strong suit lies in air power, most notably in the Nièuports and the SPADs which arguably are the best fighters of the war.