In this video we take a look at an original 1970s brochure for an Oerlikon 20mm Cannon. The booklet, printed in 1974, covers the Type GAI-BO1 – which had previously been designated the 10ILa/5TG. The Swiss Oerlikon had been introduced in the mid-1930s and seen widespread on both sides use during the Second World War.
The brochure covers the anti-aircraft and ground roles the cannon was capable of fulfilling as well as explaining the major assemblies of the weapon and some of the accessories like sights and magazines. The brochure also lays out some of the ammunition available for the Oerlikon, ranging from practice shells to fragmentation HE incendiary and armour-piercing hard core shells. The Oerlikon cannon remains in production and in service with dozens of countries around the world.
The brochure is now part of our reference collection and we were able to bring this video to you due to the support of our Patrons. We have many more videos on important and interesting primary source material like this brochure in the works. If you enjoy our work please consider supporting us via Patreon. Find out more here.
Late last summer we visited the Anglesey Transport Museum in North Wales. They had a great collection of classic and vintage cars and bikes and most interestingly they had a little collection of British military vehicles.
They had a number of trucks and special purpose vehicles from the Royal Engineers, REME and RLC and even a Green Goddess Fire Engine. They also had a couple of pretty cool Cold War British Army armoured personnel carriers.
The Saracen was a six-wheeled armoured personnel carrier (APC) built by Alvis. It entered service in 1952 and was used extensively in Malaya and Northern Ireland. The Saracen could carry an 8 man section along with its 2 man crew. It had a 160HP Rolls Royce engine and depending on when during its service life its turret could be mounted with a .30 calibre M1919A4 or an L37 vehicle-mounted general purpose machine gun.
Another APC which was in service alongside the Saracen, the ‘Truck, Armoured, 1 Ton, 4×4’, better known as the Humber Pig. Based on a truck chassis, it had a 120HP 6 cylinder engine and room for 6 men on the benches in the back. It could be mounted with an L4 Bren gun. It saw extensive use in Northern Ireland during operation Banner and was in service from 1956 through to the early 90s.
Daimler Ferret Mk1 Scout Car
Next to the Pig in the collection was a Mk1 Daimler Ferret scout car. Fitted out with an M1919A4 and six forward-firing grenade launchers – for smoke grenades. The later Mk2 had a turret but the Mk1 made use of its low profile. This one has its canvas cover over the fighting compartment. The 4×4 Ferret was powered by a 130HP Rolls Royce B60 straight six. Perfect little run-around to do the shopping in.
On the top of the hull is the pintle mounted Browning M1919A4 machine gun. This would have been operated by the Ferret’s commander. We can see the mount allows it to be aimed and fired from somewhat inside the hull. The Ferret entered service in the early 1950s and remained in use into the late 1980s/early 1990s. Just short of 4,500 Ferrets were manufactured.
Bofors QF 40mm Mk1
At the centre of the military vehicle collection was a QF 40mm Mk1, better known as a Bofors. Both land and naval versions of the Bofors were used during the Second World War and after. Capable of firing 120 40mm shells per minute, it was normally manned by a four man crew. It filled the British army’s light Anti-Aircraft gun role and remained in service well into the 1980s.
We can see the gun’s huge recoil spring and to the rear of the gun is a case deflector which connected with a trough which channels the spent cases down below the gun. The gun still has most of its controls and traverse and elevation crank handles in place. On top of the gun are the huge guides for the four-round clips of 40mm shells.