▁inf antry ▁under ▁Spanish ▁command , ▁and ▁ 4 0 0 ▁sail ors ▁to ▁work ▁the ▁French ▁art illery . ▁ ▁R ig ault ▁also ▁left ▁the ▁cor v ette ▁Prim au gu et , ▁the ▁gun bo ats ▁A val anche ▁and ▁Drag onne ▁and ▁the ▁transport ▁Dur ance ▁at ▁Sa ig on . ▁ ▁The ▁French ▁rep a ired ▁the ▁Southern ▁Fort , ▁captured ▁from ▁the ▁Vietnam ese ▁in ▁February , ▁and ▁converted ▁it ▁into ▁a ▁strong hold ▁for ▁the ▁g arrison . ▁ ▁On ▁ 2 1 ▁April ▁ 1 8 5 9 ▁J aur ég ui berry ▁launched ▁a ▁surprise ▁attack ▁on ▁a ▁Vietnam ese ▁fort ification ▁that ▁had ▁been ▁built ▁to ▁the ▁west ▁of ▁the ▁town . ▁ ▁The ▁al lied ▁attack ▁succeeded ▁and ▁the ▁Vietnam ese ▁position ▁was ▁bur nt ▁down , ▁but ▁al lied ▁cas ual ties ▁were ▁ 1 4 ▁dead ▁and ▁ 3 1 ▁wounded ▁out ▁of ▁a ▁total ▁of ▁ 8 0 0 ▁men ▁engaged . ▁ ▁This ▁was ▁such ▁a ▁heavy ▁loss , ▁given ▁the ▁limited ▁al lied ▁numbers , ▁that ▁J aur ég ui berry ▁made ▁no ▁further ▁attacks . ▁ ▁The ▁Franco - Span ish ▁g arrison ▁of ▁Sa ig on ▁with d rew ▁to ▁the ▁Southern ▁Fort ▁and ▁b ided ▁its ▁time . ▁▁ ▁Sie ge ▁of ▁Sa ig on , ▁March ▁ 1 8 6 0 ▁to ▁February ▁ 1 8 6 1 ▁ ▁The ▁capture ▁of ▁Sa ig on ▁proved ▁to ▁be ▁as ▁h ollow ▁a ▁victory