shire ▁R HA ▁joined ▁the ▁division ▁on ▁formation ▁and ▁was ▁assigned ▁to ▁XIX ▁Brigade , ▁Royal ▁Hor se ▁Art illery ▁( T . F .). ▁ ▁In ▁practice , ▁the ▁battery ▁remained ▁attached ▁to ▁its ▁mounted ▁brig ade . ▁ ▁The ▁battery , ▁and ▁its ▁brig ade , ▁served ▁with ▁the ▁Imperial ▁Mount ed ▁Division ▁in ▁the ▁S ina i ▁and ▁Palest ine ▁Camp aign ▁as ▁part ▁of ▁the ▁Des ert ▁Column . ▁ ▁With ▁the ▁division , ▁it ▁took ▁part ▁in ▁the ▁advance ▁across ▁the ▁S ina i . ▁ ▁The ▁battery ▁was ▁re - equ ipped ▁with ▁four ▁ 1 8 ▁p ound ers ▁in ▁time ▁for ▁the ▁First ▁Battle ▁of ▁Gaz a ▁( 2 6 2 7 ▁March ▁ 1 9 1 7 ). ▁ ▁It ▁also ▁took ▁part ▁in ▁the ▁Second ▁Battle ▁of ▁Gaz a ▁( 1 7 1 9 ▁April ▁ 1 9 1 7 ). ▁ ▁In ▁June ▁ 1 9 1 7 , ▁the ▁Des ert ▁Column ▁was ▁re organ ised ▁from ▁two ▁mounted ▁divisions ▁of ▁four ▁brig ades ▁each ▁( AN Z AC ▁and ▁Imperial ▁Mount ed ▁Div isions ) ▁to ▁three ▁mounted ▁divisions ▁of ▁three ▁brig ades ▁each ▁( AN Z AC , ▁Australian Im per ial ▁Mount ed ▁Division ▁renamed and ▁the ▁new ▁Ye oman ry ▁Mount ed ▁Division ). ▁ ▁Con sequently , ▁the ▁ 6 th ▁Mount ed ▁Brigade , ▁along ▁with ▁Ber k shire ▁R HA , ▁was ▁transferred ▁from ▁the ▁Imperial ▁to ▁the ▁Ye oman ry ▁Mount ed ▁Division