Cablegram unnumbered LONDON, 1 September 1939, 1.24 p.m.
MOST IMMEDIATE CLEAR THE LINE
For immediate transmission to Prime Minister. No official information through diplomatic source received, but German official wireless at noon reported that troops had crossed all Polish frontiers in order to resist attacks. Air and fleet action were also being taken.
BRUCE
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[AA: CP290/6, ITEM 27]