, ▁but ▁it ▁is ▁still ▁encountered ▁in ▁some ▁histor ians ▁of ▁the ▁time ▁as ▁an ▁anti qu arian ▁term . ▁ ▁References ▁ ▁S ources ▁ ▁Further ▁reading ▁▁▁ ▁Category : Th emes ▁of ▁the ▁By z antine ▁Empire ▁Category : St ates ▁and ▁territ ories ▁established ▁in ▁the ▁ 6 8 0 s ▁Category : Med ieval ▁Th race ▁Category : Ge ography ▁of ▁medieval ▁Th race <0x0A> </s> ▁Unity ▁was ▁the ▁code ▁name ▁for ▁Th ailand ' s ▁cover t ▁supply ▁of ▁mer cen ary ▁soldiers ▁to ▁the ▁Kingdom ▁of ▁La os ▁during ▁the ▁La ot ian ▁Civil ▁War . ▁From ▁ 4 ▁July ▁ 1 9 6 4 ▁until ▁March ▁ 1 9 7 3 , ▁batt al ions ▁of ▁Th ai ▁volunte ers ▁fought ▁Commun ist ▁ins urg ents ▁on ▁the ▁P lain ▁of ▁J ars ▁in ▁Military ▁Region ▁ 2 . ▁As ▁the ▁H m ong ▁L ' Arm ée ▁C land est ine ▁was ▁sa pped ▁by ▁on going ▁cas ual ties ▁and ▁a ▁limited ▁basis ▁for ▁rep lac ements , ▁Unity ▁batt al ions ▁replaced ▁them . ▁ ▁By ▁December ▁ 1 9 7 0 , ▁Unity ▁batt al ions ▁also ▁began ▁def ensive ▁operations ▁against ▁People ' s ▁Army ▁of ▁Vietnam ▁units ▁pushing ▁west ward ▁from ▁the ▁Ho ▁Chi ▁Min h ▁trail ▁in ▁the ▁southern ▁La o ▁pan handle . ▁By ▁the ▁time ▁the ▁Commun ists ▁defeated ▁the ▁Royal ists ▁in ▁February ▁ 1 9 7 3 , ▁about ▁ 1 8 , 0 0