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In page Estoc:

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Early on, the estoc was hung from the saddle when on horseback and simply hung from the belt when a soldier took to the ground. As the weapon developed, however, infantrymen using it began to wear it in a scabbard.[5] Most varieties of estoc provide a long grip like that of a greatsword, though others mimic the zweihänder in providing a long ricasso with a secondary guard of parrierhaken.[A] As on the zweihänder, this extended grip gives the wielder the advantage of extra leverage with which to more accurately and powerfully thrust the long weapon. Some other forms provided finger rings, curved quillons, or other varieties of compound hilts.[1]