Don,

Your story holds good for conventional weapons - it does not hold good for CB weapons or for the process of developing counter-measures, which against CB weapons are passive - design and durability of suits and respirators for use by personell, filtration systems and gas tight integrity for vehicles, 'Citadel' tests for ships and structures.

Not once in my time in the service did I ever come across any US or NATO reference to the use of CB weapons by US or NATO. Not once did I ever see any CB munitions. Soviet Russia and the Warsaw Pact countries had them - take a look at the organisation of their armed forces required to support that capability - and all for a weapon that was considered to be extremely unreliable and unpredictable in effect.