In the 17th, 18th and 19th century France have the best military record overall. Or do you completely ignore the war of the Grand Alliance, the Revolutionary and Napoleonic Wars, where France managed to get a draw while fighting all of Europe, and the seond one where the Allied powers took 25 years to beat France inot submission by also uniting all of Europe against France. In WWI and II Germany had more allies and more useful allies than France had during it's own run (No allies for France during the Grand Alliance, something Germany never did).
France had much better allies during the French Revolutionary/Napoleonic Wars. They had German states and Poland helping them. Polish soldiers excelled even better than French soldiers. Which allies did Germany have in WW1 and WW2 that were useful? Italy dragged Germany in useless wars in Greece and Africa in WW2.
France had the best record in the 19th century? Pipsqueak Prussia crushed both Austria and France in two separate wars in only a few weeks each. That's impressive.
France had the best record in the 18th century? They won the War of Spanish Succession in that their claimant acceded to the Spanish throne but their performance were not impressive. They frequently lost to Marlborough's and Eugène's armies. They won only by outlasting their opponents and had to pay a high price by conceding territories to Britain that would prove eventually costly to France in the Seven Years War. Not impressive.
They won the War of Quadruple Alliance against a weak Spain. It was France, Britain, Netherlands and Austria against Spain. Despite the favourable circumstances, the French armies didn't perform exceptionally well. The French and Austrians (who had the excuse that they were also fighting the Turks at the same time) suffered reverses early in the war. The war ended on sea with Britain defeating Spain which convinced Spain to sue for peace because Spain felt it could not handle two fronts. Not impressive performance by France.
In the War of Polish Succession, they lost. Austria got their claimant on the Polish throne against French and Spanish objections. France lost 50,000 troops for nothing while Austria lost 30,000. Spain did better than France, defeating Austria in Naples and Sicily and taking these territories.
In the War of Austrian Succession, they won with mixed results. Their victory in Netherlands is contrasted by their defeat in Italy. The real stars in the war was Prussia defeating big Austria on land and Spain defeating Britain on sea.
Seven Years War. They completely and totally lost in every theater. They lost to Prussia in Europe and to the British in North American and India. Austria managed to fight Prussia to a standstill on even terms while France couldn't beat Prussia despite numerical superiority. Not impressive.
In the first Polish Partition, they lost. France promised Poland protection but were helpless to do anything but protest as Russia, Austria and Prussia carved up Poland.
In the American Revolution they won but it was an alliance of France, Spain, and the Netherlands against Britain. France did have significant victories. But they also had a few defeats and Spanish armies and navy performed better.
Then we have the French Revolutionary/Napoleonic Wars. I already said in another post that this appears to be an exception for France in a millennium of mediocre record.
So, to recap: Prussia, Austria and Britain performed better than France in the 18th Century. France and Spain were about the same level in this century.
Spain had the best performance during the 15th, 16th and 17th centuries.
Prussia/Germany had the best performance in the 18th, 19th and 20th centuries.
England had the best performance in the 14th century.
Before that, it was the Mongols and Muslims.
France did not have the best performance in any century.
Furthermore, apart from Russia, no other European power suffered disastrous defeats like France did CONSISTENTLY throughout the centuries.
20th century was WW2
19th century was Franco-Prussian War
18th century was the Seven Years War
16th century was the Italian Wars
14th century was the Edwardian phase of Hundred Years War