The Agsu Garrison Cap: What It Actually Is
The Agsu garrison cap is a side-cap style headgear used by the Azerbaijani Armed Forces and various law enforcement bodies. It is not the same as the Soviet-era sidecap, though it clearly inherited the basic shape. The distinguishing features are the regional embroidery patterns, the specific shade of field green or dark blue depending on the branch, and the metal badge placement. Agsu itself is a district in central Azerbaijan, and the cap style became associated with units stationed there during the Soviet period, then persisted after independence. If you are looking to acquire one or understand what you are buying, here is the practical breakdown. Most reproductions online are generic Chinese-made sidecaps with a random badge glued on. A genuine or properly spec'd Agsu cap has specific markers you can check.
What to look for: The fabric is usually a cotton-wool blend, heavier than the cheap polyester sidecaps sold for $8. It should feel substantial, around 280 to 320 GSM. The stitching along the crown seam is tight and even, with no loose threads. The badge is pinned or riveted, not ironed on. Azerbaijani military badges have a distinct weight and finish. The inner sweatband is typically made of a breathable fabric, sometimes with a small size label sewn in Turkish or Russian text. Cheaper copies skip this entirely.
I once ordered a cap from a supplier claiming it was "original Azerbaijani issue." When it arrived, the fabric was shiny polyester, the badge was a flat stamp, and the interior had no sweatband at all. I sent it back. The workaround was finding a seller who actually sources from Baku-based uniform suppliers rather than Alibaba generic listings. Sites like milstore.az or direct orders through Azerbaijani defense contractors produce the real article.
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Wearing and Maintaining It
The Agsu cap is worn with the fold line sitting across the forehead, roughly at eyebrow level. The point sits centered. It is not a fashion item. The shape degrades quickly if you throw it in a pack and sit on it. For maintenance, hand wash in cold water with mild detergent. Air dry flat. Never put it in a dryer. The badge will corrode if exposed to salt or heavy sweat without cleaning. Wipe the badge with a dry cloth after each use in field conditions. The main failure point is the crown losing its shape. If yours starts collapsing, steam it lightly and reshape while warm. Do not overwet the fabric. I have ruined two caps this way before learning that trick.
Common Pitfalls
Size is the biggest issue. Azerbaijani sizing uses centimeter head measurements, not S/M/L. Measure your head circumference in cm and match it to the chart. A cap that is 2 cm too large will slide around. One that is 2 cm too small will give you a headache within an hour. Another problem: the branch variant matters. The army version is field green. The navy wears dark blue. The interior lining color can also indicate the specific unit. Buying the wrong variant will make you look careless if you are wearing this in a context where it matters. There is also a ceremonial variant with gold braiding and a more elaborate badge. This is not for field use. The gold thread catches on everything and the cap loses its shape faster than the standard version.
Where to Get One
Reputable sources include official Azerbaijani military surplus stores, specialized Eastern European uniform suppliers, and defense expo vendors. Avoid marketplaces with thousands of reviews that all look generated. The real ones are harder to find but worth the effort. If you cannot source an authentic piece, a well-made reproduction from a reputable uniform maker is acceptable for civilian or reenactment use. Just be honest about what it is.

Bottom Line
The Agsu garrison cap is a functional piece of headgear with a clear lineage. It is not a costume prop. The quality variance between genuine and counterfeit is huge, and the sizing requires actual measurement. Get the right size, the right branch variant, and maintain it properly. Otherwise it is just another cheap sidecap that falls apart in six months.