I follow your given link and yes I guess it is a military knife.

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expandable baton

As stated by S-K it is probably a civilian model and made around the same time. I have yet to find that particular pattern stamped with Military or government property markings.

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I measure my collection by the ton.
Whoever dies with the most tools wins......Now accepting donations.

In Flook's British & Commonwealth Military Knives, he calls this knife the "Sudan Linesman's Knife". I have never seen one with a Broad Arrow mark but apparently Mr. Flook, the acknowledged expert on British military knives, does consider it a military knife used by the British Army for issue to electricians. It would certainly be more useful for the electrician than the standard issue knife. I wish I had my copy in front of me now so I could re-read the information he has published.

Agreed gew, Military Knives are also called Combat Knives, But the knife which is in that link is not a Military Knife, If you wanna see actual Military Knife you must refer this:
ebladestore.com/military-knives.html


Military and Combat Knives

What kind of response did you get when you posted it over on BritishBlades.com?

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Forged on the anvil of discipline.
The Few. The Proud.
Jerry D.

This country has become more about sub-groups than about it's unity as a nation.

"The #72 pattern has got to be pretty close to the perfect knife."
--T.J. Murphy 2012