British Army Jack Knife
- In stock, ready to ship
British Army Jack Knife
Fitted with single blade, Marlinspike, flathead screwdriver, can opener and steel loop for lanyard.
- World War I Variations: During WWI, material shortages led to variations, such as the use of flat fiber grips instead of horn or bone.
- World War II Era: The WWII-era knives were generally more compact than their WWI counterparts. They typically featured black chequered plastic (Bexoid) scales, a sheepsfoot blade, a can opener, and a marlinspike. A flathead screwdriver was often incorporated into the design as well.
- Post-WWII and Cold War: The design saw few radical changes after WWII, with the 1940 Pattern, with its all-metal construction and large marlinspike, becoming an iconic and long-serving model that remained in use through the Falklands War and beyond. The instruction "Oil the joints" was often stamped on the side as a reminder for maintenance.
- Modern Era: By the early 21st century, the traditional jack knife began to be phased out in favor of more modern multi-tools
Domestic Shipping
We mainly use Royal mail 48 for items under 1kg and DPD for items over this weight. We may change this at any time dependant on service availability and destination.
We send out the majority of orders the same day of receiving upto 1pm
We also offer an express shipping service which ensures your delivery is prioritised for delivery as quick as possible and usually delivered the next working day.
We do offer Saturday delivery and timed delivery but prices are on application.
For US and Canada we mainly use Fedex priority and deliveries are usually recieved within 2 to 5 days
For EU deliveries we mainly use DPD by road and usually takes from 3 to 7 days, your parcels are not necessarily delivered by DPD in your county and the parcel may be passed to your countries nominated carrier.
Rest of the World, we have availability with all the major carriers and each is nominated dependant on the best service for the receivers destination.
If you can not get an automated shipping quote please contact us for a spot shipping quote.
If you are not entirely satisfied with your purchase, we're here to help.
You have 7 calendar days to contact us and arrange for the item to be returned which will be received by us no longer than 30 days from initial order. To be eligible for a return, your item must be unused (if applicable) and in the same condition that you received it. Your item must be in the original packaging (if applicable).
There is a £3.99 charge to use our returns facility. (UK domestic only)
To return your item(s) please click here
When sending items back please ensure that the proof of purchase (or copy) is within the package with any instructions if applicable.
Once we receive your item, we will inspect it and notify you that we have received your returned item. We will immediately notify you on the status of your refund or exchange and if applicable we will initiate a refund via your original method of payment.
If you opt for an exchange we will contact you for further postage costs. (price dependant on weight/destination).
If applicable you will receive the credit within 7 days, depending on your card issuer's policies. Contact Us If you have any questions on how to return your item to us.
🪖 MilitaryMart Size Guide (Click to Expand)
Military clothing sizes are listed as Height / Chest (for jackets and smocks) or Height / Waist (for trousers).
Example: 180/96 fits someone around 5'11" tall with a 38" chest.
| NATO Size (Label) | Approx Height | Chest / Waist (in) | Generic Size |
|---|---|---|---|
| 160 / 88 | 5'3"–5'5" | 34–35" | Small (S) |
| 170 / 88 | 5'7"–5'9" | 34–35" | Small (S) |
| 170 / 96 | 5'7"–5'9" | 37–38" | Medium (M) |
| 180 / 96 | 5'10"–5'11" | 37–38" | Medium (M) |
| 180 / 104 | 5'10"–5'11" | 40–41" | Large (L) |
| 190 / 96 | 6'2" | 37–38" | Medium (M) Tall |
| 190 / 104 | 6'2" | 40–41" | Large (L) Tall |
| 180 / 112 | 5'11" | 43–44" | X-Large (XL) |
| 190 / 112 | 6'2" | 43–44" | X-Large (XL) Tall |
| 200 / 120 | 6'4"+ | 46–48" | 2X-Large (2XL) |
⚙️ Sizing Tips
- The first number is your height in cm.
- The second number is your chest or waist in cm.
- Military gear is usually cut roomy for layering and movement.
- If you’re between sizes, go down for a closer fit or up for layering.
- Example: 5'11" tall with 40" chest → 180/104 (Large).