▁m uzz le ▁bra ke ▁was ▁fitted ▁and ▁the ▁re co il ▁system ▁adjust ed ▁to ▁allow ▁the ▁use ▁of ▁a ▁more ▁powerful ▁charge ▁and ▁new ▁long - range ▁shell . ▁Gener ally ▁it ▁did ▁not ▁equip ▁independent ▁art illery ▁batt al ions ▁until ▁after ▁the ▁Battle ▁of ▁St aling rad ▁in ▁ 1 9 4 3 . ▁ 5 3 ▁were ▁also ▁export ed ▁to ▁Finland , ▁where ▁they ▁were ▁known ▁as ▁ 1 0 5 ▁H ▁ 3 3 . ▁ ▁The ▁ 1 0 . 5   cm ▁le F H ▁ 1 8 M ▁was ▁also ▁in ▁service ▁with ▁the ▁Sy rian ▁Army , ▁one ▁example ▁being ▁preserved ▁in ▁the ▁Military ▁Museum ▁in ▁Dam asc us . ▁The ▁type ▁has ▁seen ▁occas ional ▁service ▁with ▁re bel ▁groups ▁during ▁the ▁Sy rian ▁Civil ▁War , ▁in ▁July ▁ 2 0 1 3 ▁and ▁May ▁ 2 0 1 5 . ▁ ▁Description ▁Many ▁were ▁converted ▁from ▁the ▁ 1 0 . 5 ▁cm ▁le F H ▁ 1 8 ▁and ▁retained ▁their ▁original ▁wood - sp oked ▁or ▁pressed ▁steel ▁whe els . ▁The ▁former ▁were ▁only ▁suitable ▁for ▁horse ▁tra ction . ▁ ▁Initial ly , ▁it ▁was ▁fitted ▁with ▁a ▁single - ba ff le ▁m uzz le ▁bra ke ▁of ▁relatively ▁low ▁efficiency . ▁This ▁was ▁later ▁improved ▁by ▁w eld ing ▁two ▁pro tr ud ing ▁ears ▁to ▁the ▁rear ▁of ▁the ▁port . ▁However ▁this ▁style ▁of ▁m uzz le ▁bra ke ▁proved ▁troubles