 When the force sailed, 20,000 of the 47,000 men were reservists The field force, augmented by an additional brigade of infantry at the last minute, totalled three divisions; a fourth was organised in early November, and a fifth at the end of the month.A sixth was mobilised on 14 December, which completed the two corps originally planned as an expeditionary force, and after a brief panic in mid-December a seventh was dispatched at the end of January, leaving the country virtually empty of regular troops.This was the end of the planned mobilisation; no thought had been given pre-war to mobilising the Militia, Yeomanry or Volunteers as formed units for foreign service.