Alternate WMDs

If somehow the development of atomic and nuclear weaponry is hindered in ATL, what would be of their replacement as the scourge of modern battlefields? Chemical? Biological?
Thanks in advance!
 
If somehow the development of atomic and nuclear weaponry is hindered in ATL, what would be of their replacement as the scourge of modern battlefields? Chemical? Biological?
Thanks in advance!

First, do we assume that the recoil from use of chem-bio weapons after WWI stays in place? Perhaps not, if not reinforced by the advent of nukes, but probably so ... at least until all memory of the Great War is gone.

You say "scourge of modern battlefields;" Does that mean anti-military weapons, as opposed to anti-civilian weapons? In either case, one good candidate for a non-nuclear "horror weapon" might be even more of a stress on development of submunitions-delivery systems than we've seen in OTL.
 
fuel-air explosives/thermobaric warheads or maybe incendiary weapons like some improved form of napalm or phosphorous.
 
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