I give you the Armagnac-Burgundian Civil War, courtesy of the Hundred Years' War and a more grave threat to the French nation than all the longbowmen in England. France was very badly splintered until near the end of that conflict; the complete collapse of the Burgundian state is one of the major things that has allowed France to exist in the modern day. (As are Jeanne d'Arc and the Bureau brothers and, as you mentioned, Philippe Auguste.) But yeah, you wouldn't really see anything recognizable as "France" until after the civil war was over. Despite the name.
'German' sort of existed for a long time, of course; while the Germans of Caesar's time were more Celtic than anything else (the vagaries between La Tene and Jastorf being extremely weird, difficult to figure out, and probably more to do with economics than culture), they still are somewhat distantly related to the modern Germans, who are largely descended from those dudes that came romping in in that huge domino-effect madness that caused the collapse of the Western Roman Empire. The Holy Roman Empire was technically the "Holy Roman Empire [of the German Nation]" for most of its post-Carolingian existence (nobody's quite sure why Maximilian picked that particular name...at least, I think it was a guy named Max...been a long time since I read up on this), and there was a "Kingdom of Germany" that made up most of the HRE and which served as a stepping stone for the emperors to introduce their sons to the business of peace and war. After 1250 or so, the very loose identification the 'Germans' in the HRE had developed with each other largely collapsed into a mess of ministates and squabbling, and even with the introduction of first the Luxembourgs and then the Habsburgs, the Germans were both politically and culturally disunited. The Reformation made that somewhat worse, increasing the divides between the southern and northern parts of the region (north was generally Protestant, south was generally Catholic after the Counter-Reformation, to massively simplify things). Germans were very particularist and regionalist for a long time, and 'national' identification didn't much exist, despite the efforts of the Habsburgs to bring the HRE under total control (e.g. the first half of the Thirty Years' War). It is only with the torching of the Palatinate by Louis XIV and the fact that the HRE served as a battleground for the rest of the European Powers during the seventeenth and eighteenth centuries that 'Germans' finally began to identify with one another. Napoleon's invasion and occupation and creation of the Confederation of the Rhine just made things go faster; no better way to get to nationalism than hating a common enemy like those nasty Frenchmen. In many ways, the war from 1813 to 1814 was a German Patriotic War, rapidly squelched at Vienna and by the Austrian agents following victory over the French, but the seeds of nationalism had been planted and would really burst into flame in 1848 and finally would come to fruition in 1870 and 1871. After that, we get all the fun pan-Germanism that helped lead to World War I. Frabjous day.