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Aided by the K.G. 100 method, a heavy and accurate scale of air attack could be brought to bear on Whitehall. Such an attack would probably make full use not only of high explosive but also of incendiary and possibly gas bombs. The possibility of fire, flooding, gas or unexploded bombs gives reason to doubt whether such an attack might not
Even should disrupt Headquarters although sited underground. the Headquarters escape, their communications are likely to be damaged, possibly, some distance away, and the accommodation thereby rendered useless.
50
The
There is only one remedy which minimises the effect of air attack - dispersal. Certain Ministries and Departments have already taken steps to select alternative accommodation but it is believed that others have not. Policy in this respect is often in the hands of civilians who have had little experience of the studious neglect of, and eventual ruthless attack on, important Headquarters. fact that Whitehall has not yet been subjected to a heavy scale of air attack is interpreted as good fortune when, by every rule, it should be interpreted as a most ominous portent.
6.
Not only should alternative accommodation for all Ministries and Departments which have not already completed their arrangements be earmarked, but also one or more full rehearsals should be held between now and the end of March to ensure that the communications of these alternative sites work smoothly. If this were done the nerve centre of this country could still function, even if Whitehall were roped off through fire, gas and unexploded bombs. If it is not done we are jeopardising the ability of the country to make its maximum effort to repel invasion.
In view of the fact that there is at present a very light scale of air attack on this country, immediate action to ensure the dispersal and evacuation when necessary of Government Departments should not give rise to an accusation of undue nervousness.
We feel that the Chiefs of Staff may wish to initiate an inquiry as to any further precautions which may be necessary to meet a sudden and intensive attack on Whitehall.
8
The
Cabinet War Room,
5th February, 1941.
(Signed)
C.S. DANIEL.
I.S.0.
PLAYFAIR.
C. E. H. MEDHURST.
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