The 51st (Highland) Division to which Wimberley was now GOC was a very different formation from that which Wimberley had served with during the Great War. Formerly, the division's reputation had been forged over successive battles in the trenches of the Western Front. The division which he now commanded was in reality the untried 9th (Highland) Infantry Division, the sister TA division to the 51st, created with the intention of supplying drafts of men as reinforcements to the 51st, which had been renumbered after the latter's surrender during the Battle of France on 12 June 1940. The division as it stood would now be able to fight as a unit, and Wimberley made a successful effort to instill a sense of "esprit de corps" in the unit. He refused "sassenach" troops for his brigades and battalions whilst "poaching" Scottish troops from other units, and appealed to his men's Scottish patriotism by encouraging the wearing of their respective tartans as much as possible, for which he was dubbed "Tartan Tam", and later "Lang Tam", due to his 6'3" height. The only non-highland unit in the 51st Division was the 1st/7th Battalion, Middlesex Regiment, because there was no machine gun battalion in the British Army which recruited exclusively in Scotland. The cockneys, as it turned out, got along very well with the Highlanders. At the same time, training was not neglected. The results would manifest themselves in action.