▁war , ▁the ▁ 1 st ▁California ▁Infantry ▁was ▁engaged ▁in ▁g arrison ▁duty ▁dispers ed ▁in ▁posts ▁across ▁New ▁Mexico ▁Territ ory ▁and ▁Texas ▁and ▁fighting ▁Apache ▁and ▁N ava jo ▁Indians ▁in ▁these ▁places ▁and ▁in ▁the ▁Ut ah ▁Territ ory . ▁ ▁The ▁unit ▁was ▁must ered ▁out ▁on ▁October ▁ 2 1 , ▁ 1 8 6 6 . ▁▁ 1 st ▁California ▁Regiment ▁of ▁Infantry ▁Command ers ▁ ▁Colonel ▁James ▁H . ▁Car leton ▁August ▁ 1 9 , ▁ 1 8 6 1 ▁- ▁June ▁ 1 , ▁ 1 8 6 2 ▁ ▁Colonel ▁Joseph ▁R . ▁West ▁June ▁ 1 , ▁ 1 8 6 2 ▁- ▁April ▁ 1 8 6 4 ▁▁ ▁Colonel ▁Ed win ▁A . ▁R igg ▁April ▁ 1 8 6 4 ▁- ▁December ▁ 1 8 6 4 ▁ ▁Line age ▁The ▁line age ▁of ▁the ▁ 1 st ▁California ▁continued ▁with ▁the ▁formation ▁of ▁the ▁Coast ▁Art illery ▁Corps ▁( C AC ), ▁California ▁National ▁Guard ▁( C ANG ) ▁on ▁ 1 9 ▁April ▁ 1 9 0 9 . ▁Sub sequently , ▁this ▁unit ▁was ▁red es ign ated ▁as ▁the ▁ 1 st ▁Coast ▁Def ense ▁Command ▁( CD C ) ▁( 1 9 1 7 ), ▁ 1 st ▁Pro vis ional ▁Battalion , ▁C AC , ▁C ANG ▁( date ▁unknown ), ▁ 1 st ▁CD C ▁( 1 9 2 1 ), ▁ 2 5 0 th ▁Coast ▁Art illery ▁( 1