▁he ▁served ▁with ▁the ▁French ▁Red ▁Cross ▁in ▁France , ▁ 1 9 1 5 - 1 9 1 6 ; ▁then ▁attended ▁Royal ▁Military ▁College , ▁Sand h urst ▁in ▁ 1 9 1 6 - 1 9 1 7 ; ▁and ▁was ▁commission ed ▁into ▁the ▁Cold stream ▁Gu ards , ▁his ▁father ' s ▁regiment , ▁in ▁ 1 9 1 7 . ▁He ▁served ▁on ▁the ▁Western ▁Front ▁with ▁ 3 ▁B n , ▁Cold stream ▁Gu ards , ▁ 1 9 1 7 - 1 9 1 8 ; and ▁was ▁on ▁g arrison ▁duty ▁in ▁C ologne , ▁Germany ▁ 1 9 1 8 - 1 9 1 9 . ▁In ▁ 1 9 2 0 ▁he ▁was ▁appointed ▁A ide ▁de ▁Camp ▁to ▁L t ▁Gen ▁Sir ▁Tom ▁Br id ges ▁in ▁S my r na , ▁Turkey , ▁ 1 9 2 0 . ▁He ▁served ▁in ▁Turkey , ▁in ▁Sy ria ▁as ▁British ▁L ia ison ▁Officer ▁to ▁French ▁forces ; ▁was ▁attached ▁to ▁French ▁Army ▁and ▁the ▁French ▁Foreign ▁Leg ion ; ▁served ▁in ▁the ▁Sud an ▁and ▁Egypt ; ▁was ▁A ide ▁de ▁Camp ▁to ▁FM ▁Sir ▁Philip ▁Wal house ▁Ch et w ode ▁Commander - in - Ch ief ▁of ▁the ▁Army ▁in ▁India ▁from ▁ 1 9 3 3 - 1 9 3 5 ; ▁retired ▁in ▁ 1 9 3 7 ▁until ▁ 1 9 3 9 ▁when ▁he ▁was ▁attached ▁to ▁the ▁Foreign ▁Office ; ▁Ass istant ▁Chief