As the title says, what would the changes have to be to get France to actually withstand the German invasion in WW2 much better than they did OTL? On paper at least, it seems bizarre that they should have lost. I don't know about the French Air Force at the time, but they had a massive navy, lots of troops, and much better weapon technology than the Germans. They even already had a couple of battle-tested (and battle-proven) designs for semi-automatic rifles. The Mle 1918 RSC modification of the Lebel seems to have worked well enough and I heard it was well liked in the Rif War, but why did France abandon that for the MAS 36? I even heard that they had a more advanced design called the MAS 38/39 that evolved into the MAS 49. In addition, they had several top-notch tanks and whatnot, despite them having 1 crewman too few. So, what changes would there have to be to organize these resources into a fighting machine much more capable of beating the Germans, and what would be the consequences?