Sealion Gas Planning

The British had made plans to use mustard gas if the Germans invaded Britain in 1940. I was wondering a couple of things:

How did the British plan to deliver the gas? 25-pounder shells? Aerial spraying?
Also, at what point would the British have started using the mustard gas? Germans reaching certain towns? Failure of army counter-attacks? German capture of a large port?

I’ve searched but can’t find any detailed information on British planning for this eventuality. I was wondering if anybody here knows.
 

perfectgeneral

Donor
Monthly Donor
I have been told (heresay) that canisters would be opened up to pour gas down invasion beaches in concentration.
 

Sior

Banned
You need to read Denis Wheatley's TOTAL WAR that he wrote in 1941 as the preperations that needed to be made incase of invasion.
 

Macragge1

Banned
I remember seeing a documentary years and years ago which suggested that the gas would be dispersed by training/second line aircraft such as the http://en.wikipedia.org/wiki/Miles_Magister and the http://en.wikipedia.org/wiki/Miles_Mentor. This would make sense, given that at this point, all the first line attack and bomber aircraft would be used in an anti-shipping role. Bear in mind that, despite being used for gas attacks, the Magister was open-cockpit, suggesting that a) the crew would have to wear gas masks or b) get out of the area pretty quick.
 
The gas would probably be delivered by a number of methods, aircraft spray tanks, artillery shells of various calibres and mortar rounds. The 4.2inch mortar had a gas shell, IIRC, plus we may still have had the Livens projector in service.

I'll need to double check a couple of sources to see exactly what we planned to use as methods of delivering gas.
 
Interesting info, cheers. Any ideas on what might have triggered the British using gas during Sealion? Did they have any specific plans or would it have been a play-it-by-ear sort of decision? I'm assuming it would have been Churchill's call with military advice.
 
Probably an initial spray on landing, then as needed, but given what we all know about the sea mammal the Germans will be losing from day one so the Brits may stick with conventional warfare as far as possible.

Also if we used gas the Germans may retaliate with there new nerve agents and given the British bio weapon program (anthrax eek!) if both sides start tossing WMD things could get...out of hand real quick. On the plus side we'd win the war by early 1941 but killing half of Europe isn't the kind of victory I'd want.

Still gas likely wouldn't be needed the Germans would be sending a few (badly weakened) divisions into the teeth of British defenses designed however adhoc with a much more powerful force in mind so it should be clear they're had it within hours. (especially once the navy cuts the supply line).
 
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