A military peak cap, often referred to simply as a "peak cap" or "visor cap," is a type of headgear worn by members of various armed forces around the world. It typically features a flat, stiff visor (peak) in front and a high, rounded crown. The design and details of military peak caps can vary widely depending on the branch of the military and the country in question.

Here are some common features of military peak caps:

Visor: The visor is a stiff, flat projection in the front of the cap that helps shield the eyes from the sun. It is usually made of a rigid material like plastic or fiberboard and covered in the same fabric as the rest of the cap.

Crown: The crown is the top part of the cap that covers the head. It is typically rounded and may have a band around its base. The crown can vary in height and shape depending on the specific design.

Band: Some peak caps have a band encircling the base of the crown. This band can be a different color or material than the rest of the cap, and it may feature insignia, badges, or other decorations.

Chin Strap: Some military peak caps come with a chin strap that can be fastened under the chin to secure the cap in place, especially in windy conditions.

Insignia: Military peak caps often feature various insignia, badges, or other decorations that indicate the wearer's rank, branch of service, and other relevant information. These can be attached to the front band or on the sides.

Material: Peak caps are typically made from a durable fabric like wool, polyester, or a blend of materials. The choice of material can depend on factors like climate, season, and intended use.

Color: The color of a military peak cap can vary widely based on the specific branch of the military, the country, and the occasion. Common colors include black, navy blue, and olive green, but there are many variations.

Badge/Patch Placement: Different branches and ranks may have specific guidelines for the placement of badges, patches, and insignia on the cap.

It's important to note that the exact design and specifications of military peak caps can vary greatly between different countries and even within different branches of the same military. Additionally, ceremonial or dress uniforms may have more elaborate and detailed peak caps compared to everyday service uniforms.

If you have a specific military in mind, or if you're interested in a particular type of peak cap, feel free to provide more details and I can try to give you more specific information!