▁August ▁ 1 8 4 6 ▁to ▁take ▁up ▁the ▁post ▁of ▁Regiment al - Ass istant - Sur geon ▁to ▁the ▁R if le ▁Brigade . ▁In ▁ 1 8 5 1 ▁he ▁was ▁posted ▁to ▁the ▁Cape ▁of ▁Good ▁Hope ▁to ▁serve ▁with ▁the ▁ 6 0 th ▁R if les ▁in ▁the ▁X h osa ▁War ▁of ▁ 1 8 5 0 - 5 3 , ▁he ▁acted ▁as ▁principal ▁medical ▁officer ▁of ▁Imperial ▁forces ' ▁expedition ▁sent ▁beyond ▁the ▁Ke i , ▁and ▁his ▁command ers ▁expressed ▁their ▁grat itude ▁in ▁general ▁orders ▁for ▁his ▁services ▁during ▁the ▁war . ▁ ▁The ▁Crime an ▁War ▁Alexander ▁achieved ▁the ▁rank ▁of ▁First ▁Class ▁Staff ▁Sur geon ▁in ▁ 1 8 5 4 ▁and ▁was ▁ordered ▁to ▁join ▁an ▁expedition ▁to ▁Turkey ▁where ▁he ▁was ▁in ▁charge ▁of ▁the ▁medical ▁officers ▁of ▁the ▁Light ▁Division ▁under ▁Sir ▁George ▁Brown , ▁landing ▁at ▁Gal lip oli ▁on ▁ 6 ▁March ▁as ▁part ▁of ▁the ▁first ▁det achment ▁of ▁the ▁expedition ary ▁force , ▁compr ising ▁his ▁former ▁com r ades ▁in ▁the ▁R if le ▁Brigade ▁and ▁a ▁det achment ▁of ▁Royal ▁Engine ers , ▁S app ers ▁and ▁Min ers . ▁He ▁remained ▁with ▁the ▁Light ▁Division ▁throughout ▁the ▁Crime an ▁War . ▁He ▁served ▁as ▁a ▁sur geon ▁at ▁the ▁Battle ▁of ▁Al ma ▁and ▁at ▁the ▁Battle ▁of ▁In k erman . ▁Lord ▁R ag lan ▁described ▁Alexander ▁" as ▁deser ving ▁to ▁be ▁most ▁hon ou rab ly