▁a ▁municipality , ▁in ▁fact , ▁in ▁ 1 8 5 5 , ▁March ▁ 1 3 , ▁with ▁the ▁name ▁of ▁It ap et ining a . ▁ ▁The ▁holy ▁patron ▁of ▁It ap et ining a ▁is ▁Our ▁Lady ▁of ▁the ▁Ple asures . ▁ ▁References <0x0A> </s> ▁Leg io ▁t ert ia ▁dec ima ▁Gem in ia , ▁in ▁English ▁the ▁ 1 3 th ▁T win ▁Leg ion , ▁also ▁known ▁as ▁Leg io ▁t ert ia ▁dec ima ▁Gem ina , ▁was ▁a ▁leg ion ▁of ▁the ▁Imperial ▁Roman ▁army . ▁It ▁was ▁one ▁of ▁Julius ▁Ca esar ' s ▁key ▁units ▁in ▁Ga ul ▁and ▁in ▁the ▁civil ▁war , ▁and ▁was ▁the ▁leg ion ▁with ▁which ▁he ▁fam ously ▁crossed ▁the ▁Rub icon ▁on ▁January ▁ 1 0 , ▁ 4 9 ▁BC . ▁The ▁leg ion ▁appears ▁to ▁have ▁still ▁been ▁in ▁existence ▁in ▁the ▁ 5 th ▁century ▁AD . ▁Its ▁symbol ▁was ▁the ▁l ion . ▁ ▁History ▁ ▁Under ▁the ▁late ▁Republic ▁ ▁Leg io ▁XIII ▁was ▁lev ied ▁by ▁Julius ▁Ca esar ▁in ▁ 5 7 ▁BC , ▁before ▁march ing ▁against ▁the ▁Bel ga e , ▁in ▁one ▁of ▁his ▁early ▁inter vent ions ▁in ▁int ra - G all ic ▁conflicts . ▁During ▁the ▁Gall ic ▁Wars ▁( 5 8 – 5 1 ▁BC ), ▁Leg io ▁XIII ▁was ▁present ▁at ▁the ▁Battle ▁against ▁the ▁N er vi ans , ▁the ▁Sie ge ▁of ▁Ger gov ia , ▁and