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Guns of Kokoda

After more than 80 years, Peter Jackson recounts the ‘Guns of Kokoda’. Further information from the Department of Environment, Water, Heritage, and the Arts is available in the download here: Kokoda Report

With the anniversary of the battle of Kokoda now more than 80 years, a recent tour of the privately owned Australian Armour & Artillery Museum in Cairns and its outstanding display of Australian small arms used in the conflict prompted a brief revisit of those firearms used to defend our country.

Since that battle, there has been dispute from some quarters that Australia was never really in danger of being invaded by the Japanese hordes.

What is not in dispute was the courage shown by our fighting men in the theatre of war, as well as the herculean effort by the Papuan Carriers.

While many are acquainted with the story of New Guinea and the battle of Kokoda, as mentioned, the visit to the Museum and the weapons used in the jungle conflict drew my attention. So, allow me to offer a very cursory overview of the guns of Kokoda.

The Owen Gun

The Owen gun, an Australia invention, truly was the ‘little gun that could’. This 9mm Parabellum submachine gun earned the nick name ‘The Diggers Darling’. It was damn near unstoppable. When tested against the Sten, the Thompson and even German sub guns of the time, Evlynn Owen’s backyard problem stopper proved head and shoulders above the rest. General McArthur was so impressed that he was about to issue the Owen to US troops in place of the heavy Thompson .45.

Owen gun quick stats

Designer: Lieutenant Evelyn Owen

Designed: 1931 – 1938

Years produced: 1942 – 1944

Number built: 45,000

Weight: 10.7 loaded

Length: 813 mm

Barrel length: 250mm

Cartridge: 9mm Parabellum

Action: Blow back open bolt

Rate of fire: 700 rounds a minute

Effective firing range: 123 metres

Feed system: Detachable 32-round magazine (often loaded to 30 rounds to relieve wear and tear on magazine springs)

Sights: Iron

The Thompson .45 calibre sub-machine gun

It might have been slow, but the Thompson .45 calibre delivered a heck of a punch. Originally designed for the close quarter fighting of World War One trench warfare, this heavy ‘Trench Broom’ may have been late to the party in WW1, but it was at home in the European ‘Theatre of War’ as well as the thick jungles of Kokoda in WW2. Unlike the Owen, however, it needed constant attention to ensure its combat-ready lethality.

This weapon was generally issued to Australian section commanders within the patrol order, carrying either a 30-round stick magazine or the 50-round drum.

Thompson. 45 Calibre sub-machine gun stats

Designer: John T. Thompson

Designed: 1917 – 1920

Manufacturer: Auto Ordnance

Produced: 1921 – 1945

Number built: 1.75 million (including several variances)

Weight: 4.5 kg empty

Length: 860mm including compensator

Barrel: 267

Cartridge: .45 cal

Action: Blowback

Effective firing range: 150 metres

Feed system: 30-round stick / 50-round drum

Mark 4 .303 rifle

So much can be said about this iconic firearm, but alas I have limited space. So, to the other .303 fans, my apologies.

By the time the Australian solider was called to fight on Kokoda, the ‘three -oh’ really did not need an introduction and had already earned a reputation as a reliable lifesaver, as well as a lethal life-taker if you were on the wrong end of it.

Versions of it had served our troops previously in WWI and, with some fine tuning and finessing as a Mark 4, the Small Magazine LEE Enfield (SMLE) .303 saw itself back in the hands of ‘The Digger’ once more. Though it proved itself against the Africa Corp in the open desert campaigns, landing in the thick jungle of New Guinea, its length did prove to be hinder swift movement at times.

Lee Enfield .303 SMLE Mark 4 stats

Designer: James Paris Lee

Manufacturer: Australia’s Lithgow Small Arms Factory until 1953

Numbers built: 17 million of all variances in total

Weight: 4.11kg

Length: 1260mm

Barrel: 640mm

Cartridge: .303

Action: Bolt

Effective firing range: 503 metres

Feed system: 10-round box magazine