將帶刺的鋼釘塞到點火孔裏很難拔出來,這使得大砲無法點火發射。如果大砲有被敵方奪走的危險,我方就會釘塞點火孔,以免敵方用它來砲擊我方。如果我方不能運走擄獲的大砲,也會釘塞點火孔,以免敵方奪回後用來砲擊我方。如果沒有特製的鋼釘可用,也可以將刺刀插到點火孔中,再將其打斷,使刀尖嵌入點火孔。[1][2]
參考資料
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