ome ▁with ▁the ▁early ▁designs ▁of ▁fin - st abil ized ▁and ▁disc arding - s ab ot ▁shell s ▁and ▁a ▁new ▁c age - type ▁m uzz le ▁bra ke ▁was ▁designed ▁and ▁fitted . ▁ ▁The ▁new ▁F H ▁Gr ▁Fern ▁long - range ▁shell ▁was ▁about ▁ ▁longer ▁than ▁the ▁normal ▁shell s ▁used ▁by ▁the ▁le F H ▁ 1 8 ▁guns , ▁but ▁had ▁a ▁shorter ▁stream lined ▁section ▁behind ▁the ▁driving ▁band ▁to ▁accommod ate ▁the ▁larger ▁pow der ▁charge ▁required . ▁This ▁fit ▁in ▁the ▁standard ▁cart ridge ▁case , ▁but ▁pro tr ud ed ▁about ▁ ▁past ▁its ▁mouth . ▁ ▁Ball ist ically , ▁the ▁ 1 0 . 5   cm ▁le F H ▁ 1 8 M ▁and ▁the ▁le F H ▁ 1 8 / 4 0 ▁are ▁identical . ▁ ▁See ▁also ▁▁ 1 0 . 5 ▁cm ▁le F H ▁ 1 6 , ▁a ▁field ▁how itzer ▁used ▁by ▁Germany ▁in ▁World ▁War ▁I ▁and ▁World ▁War ▁II ▁▁ 1 0 . 5 ▁cm ▁le F H ▁ 1 8 , ▁previous ▁version ▁of ▁the ▁le F H ▁ 1 8 / M ▁▁ 1 0 . 5 ▁cm ▁le F H ▁ 1 8 / 4 0 , ▁a ▁light ▁how itzer ▁mounted ▁on ▁a ▁ 7 . 5 ▁cm ▁Pa K ▁ 4 0 ▁ant it ank ▁gun ▁carriage , ▁used ▁by ▁Germany ▁in ▁World ▁War ▁II ▁ ▁Wes pe , ▁a ▁self - prop