I think honestly we need a new major war and let the Germans fight it. They will invent like 1000 new fancy weapons in the process, then maybe lose and we can copy all their ideas.
Like during WWI when the krauts invented the anti-tank rifle to crack open British M1 tanks.
And it worked.
Mauser Mod. 1918 13.2 mm Tankgewehr
> The armour-piercing hardened steel cored 13.2×92mm (.525-inch) semi-rimmed cartridge, often simply called "13 mm"