Diary for Wednesday, September 20, 1916:
Battle of the Somme: Rawlinson delays next Fourth Army attack to September 23, he and Haig agree that British cavalry should be withdrawn. Fierce German counter-attack almost retakes Bouchavesnes but driven out after desperate fighting. Canadian Corps pull out of line after 6,000 casualties but fighting again on September 26.
Baltic: Much abler Vice Admiral A J Nepenin replaces Kanin as Russian Baltic Fleet C-in-C, but Supreme War Council forbids intensified submarine offensive.