In an alternate timeline where a United India and China emerge as Super Powers while Europe and the Middle East are poor and unable to influence much, is it conceivable for the alternative China and India with 1914 levels of tech and over a billion people each to be able to duke it out in a war of attrition with armies proportionately as large as France and Germany OTL? Meaning 50,000,000+ man armies, fighting a war of attrition? Assuming that trade is still reasonably open and global markets are fairly developed, could the world conceivably come up with the materials needed for that?