Japanese WW2 grenade
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German anti cavalry spikes
or caltrops.
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Each caltrop has four
projecting spikes at different angles so that at least one spike will
always face upwards.
Caltrops were designed to
stop cavalry by piercing the soles of horses moving over them. These
spikes were collected from Avenue Farm, near Messines, by Captain W C G
Ruddock, of 40 Battalion, AIF
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WW1 British grenade No.5
Mk.1
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