During the Late Middle Ages, plate armour was expensive and tailor-made for the wearer. Consequently, it was generally reserved for nobility. During the English Civil War a Cuirassier's armour could weigh between 32 kg and 45 kg, making this form of armour prohibitively costly and heavy. For these reasons, full plate armour started to disappear during the first few years of the conflict. Early Modern warfare was characterized by the establishment of standing armies equipped with mass-produced ordnance weapons.
Munition armour was of a standard pattern with interchangeable pieces. It was often made of iron or sometimes an alloy of iron containing a small amount of phosphorus, which gave a marginal increase in hardness. The phosphorus content may have been due to the use of high-phosphorus ores or the use of coal in smithing.
In Japan, the warfare of the Sengoku period (15th and 16th centuries) required large quantities of armour to be produced for the ever growing armies of foot soldiers (ashigaru). Simple munition quality (okashi or lent) cuirasses (dō) and helmets (kabuto) were mass-produced including foldable suits, like Tatami armour. Tatami armours were made from small iron or leather plates that were usually connected to each other by mail.
- David (Education Team) (21 December 2017). The Arms and Armour of The English Civil War.
- "Royal Armouries: 8. The metallurgy of plate armour". Royal Armouries. Archived from the original on 2007-11-13. Retrieved 2008-02-16.
- Lev, Yaacov (1997). War and Society in the Eastern Mediterranean, 7th–15th Centuries. BRILL. ISBN 90-04-10032-6.
- The Watanabe Art Museum Samurai Armour Collection Volume I — Kabuto & Mengu, Trevor Absolon P.130
- Samurai: The Weapons and Spirit of the Japanese Warrior, Clive Sinclaire, Globe Pequot, 2004 P.29
- Samurai 1550-1600, Anthony J. Bryant, Angus McBride, Osprey Publishing, 1994 P.31
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