Imo, the PLAGF + PLANMC together with the 500k or so PAP should be enough for simultaneous LSCO against Japan/ROC, India, and on the Korean peninsula, which is the most that would realistically happen (perhaps with a small force left to deter Vietnam). Imo only personnel who train regularly with mechanized combat and other high end capabilities like we see the PAP do would be realistically useful in combat in these HIC contingencies, reserves & militia let alone retirees can be basically discounted.