Type 4 Ceramic Grenades

Pacific Paratrooper

Type 4 Ceramic Grenade

Grenades have long been used in warfare across the world. However, their manufacture requires certain industrial materials and production lines.

In the closing stages of WWII, strategic bombing had decimated Japanese industrial infrastructure, leading to the development of a last-ditch weapon: the Type 4 grenade.

The Type 4 is also known as the “ceramic grenade” because it was made of porcelain or terracotta. These were materials which could be found at the end of the war when more traditional grenade materials were in short supply.

The Imperial Japanese Navy Technical Bureau came up with the idea for this new weapon. It was easy to make and cheaper to produce than traditional grenades at the time. This new weapon was to be used by the general populace of the country in the event of an Allied invasion.

To mass produce these grenades, kilns which were normally used…

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