▁late ▁December ▁ 1 9 6 7 ▁by ▁the ▁ 3 rd ▁Battalion , ▁ 1 st ▁Infantry ▁Regiment ▁of ▁the ▁ 1 1 th ▁Light ▁Infantry ▁Brigade , ▁ 2 3 rd ▁( Amer ical ) ▁Infantry ▁Division , ▁primarily ▁Al pha ▁and ▁Bra vo ▁companies . ▁ ▁In ▁July ▁ 1 9 6 8 ▁C ▁battery , ▁ 1 st ▁Battalion , ▁ 8 2 nd ▁Field ▁Art illery ▁Regiment ▁was ▁deployed ▁to ▁L Z ▁L iz ▁and ▁the ▁guns ▁were ▁moved ▁from ▁the ▁s addle ▁to ▁the ▁eastern ▁hill ▁facing ▁the ▁South ▁China ▁Sea . ▁The ▁ 1 / 8 2 nd ▁supplied ▁support ▁for ▁the ▁ Đ ứ c ▁Ph <0xE1> <0xBB> <0x95> ▁Base ▁Camp ▁and ▁the ▁field ▁troops ▁of ▁the ▁ 1 / 2 0 th . ▁Begin ning ▁with ▁T et ▁ 1 9 6 9 ▁the ▁L Z ▁began ▁to ▁be ▁attacked ▁with ▁mort ar ▁and ▁ro cket ▁attacks ▁period ically . ▁In ▁June ▁ 1 9 6 9 ▁more ▁in fil tr ation ▁attacks ▁were ▁successful ▁and ▁the ▁art illery ▁sust ained ▁cas ual ties . ▁The ▁access ▁road ▁also ▁became ▁a ▁time ▁bomb ▁as ▁und et ect able ▁mines ▁were ▁plant ed . ▁L Z ▁L iz ▁was ▁the ▁last ▁support ▁base ▁for ▁ 1 st ▁Battalion , ▁ 2 0 th ▁Infantry ▁Regiment , ▁ 1 1 th ▁Infantry ▁Brigade ▁( Light ) ▁( 4 th ▁B n ▁ 3 rd ▁B de ), ▁ 2 3 rd ▁Infantry ▁Division ▁prior ▁to ▁their