This video provides an in-depth look at the Japanese Type 89 grenade discharger, commonly known as the 'knee mortar.' Introduced in 1929, this light infantry weapon blurs the lines between a grenade launcher and a mortar. The description highlights its effectiveness and rapid deployment in WWII, comparing it to the US 60mm light mortar. It also debunks the origin of the 'knee mortar' nickname, explaining the actual intended use of its curved baseplate for digging into soft soil.
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