The closed helmet covers the entire head and was seen mostly during the crusades

Crusades

The Crusades were a series of religious wars, blessed by the Pope and the Catholic Church with the main goal of restoring Christian access to the holy places in and near Jerusalem...

. The closed helmet outdated the barbute in the 14th, or 15th Century. The closed helmet completely covered the head, and was usually seen with chainmail

Chainmail

Mail is a type of armour consisting of small metal rings linked together in a pattern to form a mesh.-History:Mail was a highly successful type of armour and was used by nearly every metalworking culture....

 attached to the bottom of the helmet for further protection of the neck. The helmet normally had holes made on the front of the helmet while still being smelted, and as well as additional holes were made on the lower front of the helmet for breathing through the mouth. In 1120, the Order of the Temple adopted the closed helmet as one of the basic pieces of armor for the Knights Templar

Knights Templar

The Poor Fellow-Soldiers of Christ and of the Temple of Solomon , commonly known as the Knights Templar, the Order of the Temple or simply as Templars, were among the most famous of the Western Christian military orders...

 of the faction

Political faction

A political faction is a grouping of individuals, such as a political party, a trade union, or other group with a political purpose. A faction or political party may include fragmented sub-factions, “parties within a party," which may be referred to as power blocs, or voting blocs. The individuals...

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It is not to be confused with the later close helm

Close helm

In Medieval armor, the close helm was a military helmet worn by knights and other combatants in the late medieval and early renaissance era. It carried a visor that pivoted up and fully enclosed the head and neck area, unlike earlier helms such as the sallet and barbute, which sometimes may have...

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