In October 1916 Wavell was graded General Staff Officer Grade 1 (GSO1) as an acting lieutenant colonel, and was then assigned as a liaison officer to the Russian Army in the Caucasus.
I oktober 1916 blev Wavell udnævnt til (GSO1) som fungerende oberstløjtnant og derpå udnævnt til forbindelsesofficer ved den russiske hær i Kaukasus.