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WWI US Trench Fighting Knife - A.C. Co.
A fighting knife, also commonly called a combat knife, is a knife designed for military use, specifically for close combat. Although since the end of trench warfare, most military knives have been primarily designed for utility or tool use. Activities such as clearing foliage, chopping branches for cover, opening ammunition crates, etc.

Trench knives are either purpose-made weapons, or are made from cut-down (shortened) bayonets or swords, and intended for close-quarter fighting, the design originating in the trench warfare of the First World War. They were particularly useful for trench raiding operations, along with other mle weapons.

The United States employed several trench knives during WWI. The one featured on this page is one of them.

This page is a recognition and identification guide for military fighting knives. Multiple detailed photos of a specific sample are provided. Descriptions point out clearly defined points that should be noted.

One of the most commonly asked questions is "How much is my fighting knife worth?". A price guide is included here to address this question. The value of the knives is reviewed over a period of several years. A trend can be observed. The present worth of the edge weapons in the collector's market is illustrated.

This service is provided free of charge to the visitor/enthusiast courtesy of MilitaryItems.com, a company dedicated to the preservation of military history and to providing quality military antiques and collectibles to museums, institutions and the general public.

  1. FAQ's
  2. knife anatomy
  3. knife construction materials
  4. knife makers and markings
  5. Fighting knife blade types
  6. Identifying fakes and reproductions
  7. Purchasing a fighting knife
  8. Perspective View

The design of the knife consists of a wooden handle with a heavy duty handguard on one side. The handguard doubles as knuckle busters. It has two rows of triangular shape teeth that serve as a striking surface. The pommel also has a triangular point that can be employed to deliver an overhead strike with downward force. The top of the triangle in the pommel is capped with a rivet that holds the assembly together.

The handle bears the manufacturer's markings which are located in the lower section and read "A.C. Co. U.S.A, 1917".

The blade is of triangular shape. The reson for this design was to inflict as much damage as possible when cutting the enemy. A wound caused by a triangular shaped blade is harder to heal than one caused by a normal blade. Triangular blades were outlawed by international law after the war.

This style of US trench fighting knife was produced by several companies. Our collection includes the following examples:

A.C. Co.
L.F. & Co.

The US Ammo Pouch

The "Military minute" is a series of instructional videos created by MilitaryItems.com for the purpose of providing basic information about military collectibles. The idea is to expose people to the exciting world of military collectibles.

The video presentation coupled with detailed photographs and written information, including a military collectible's price guide, enhances the visitor's experience.

This edge weapon is currently being reproduced. It is becoming more difficult to be able to tell the fake ones from the real ones because the quality of the reproductions is improving. The collector must become familiarized with the construction style and materials employed in the manufacturing of this item. Attention to the details is critical in order to be able to determine the authenticity of the collectible.

If you have an interest is seeing other fighting knives, you can do so by going to our Military Fighting Knives Price Guide identification guide. Where we cover Army, Navy, Army Air Force, USMC and other organizations.


The value for the Fighting Knives and other military antiques and collectibles is provided as a means to educate the collector community and individuals who have a general interest on the field. The following is an estimated value. Prices may vary in every state and every country. This service is provided courtesy of MilitaryItems.com . The source for military antiques and collectibles in the web.

Year 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
Value $400.00 $400.00 $420.00 $450.00 $470.00 $500.00 $500.00 $550.00 $550.00 $600.00 $600.00 $650.00
Availability Medium Medium Medium Medium Medium Medium Rare Rare Rare Rare Rare Rare
Invest Grade A A A A A A A A A A A A

Jan 4th, 2017
This is a very nice knife. No damage to the handle or blade. Complete with the original scabbard. The value has been going up and it is likely to continue over the years.

While the item featured here is not for sale, similar items like it are available for purchase in our website MilitaryItems.com

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