SAK meaning in Military and Defence ?

The Swiss Army knife is a multi-tool pocketknife manufactured by Victorinox. The term "Swiss Army knife" was coined by American soldiers after World War II after they had trouble pronouncing the German word "Offiziersmesser", meaning "officer’s knife".

The Swiss Army knife generally has a main spearpoint blade plus other blades and tools such as screwdrivers, a can opener, a saw blade, a pair of scissors, and many others. These are stowed inside the handle of the knife through a pivot point mechanism. The handle is traditionally a red color, with either a Victorinox or Wenger "cross" logo or, for Swiss military issue knives, the coat of arms of Switzerland. Other colors, textures, and shapes have appeared over the years.

Originating in Ibach, Switzerland, the Swiss Army knife was first produced in 1891 when the Karl Elsener company, which later became Victorinox, won the contract to produce the Swiss Army's Modell 1890 knife from the previous German manufacturer. In 1893, the Swiss cutlery company Paul Boéchat & Cie, which later became Wenger SA, received its first contract from the Swiss military to produce model 1890 knives; the two companies split the contract for provision of the knives from 1908 until Victorinox acquired Wenger in 2005. A cultural icon of Switzerland, both the design of the knife and its versatility have worldwide recognition. The term "Swiss Army knife" has acquired usage as a figure of speech indicating extreme utility applicable to more or less any scenario at hand.