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Thorneycroft "Amazon" 6 x 6 trucks/half-tracks: 36 brought in 1938 and used as artillery prime movers and converted into artillery tractors (with an armoured hood over the engine) at the Esteban de Luca Arsenal. A track, provided by the manufacturer, slipped over the two rear axles easily converts these vehicles into half-tracks.
Yacaré Armoured Artillery Tractor, from 1938 eighty International Harvester commercial tractors were purchased by the Army and converted into armoured artillery tractors at the Esteban de Luca Arsenal with 5-3mm thick armour plating over the engine and cab.
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1939 HAFDASA 6 x 6 artillery prime mover, produced at the HAFDASA (Hispano Argentina Fabrica de Aumotobiles) plant in Cordoba from powered by a 150 HAFDASA diesel engine. 350 are to be built by 1942 to equip all Artillery units in the Army at Corps and Brigade level excluding the Mountain Brigade.
![](http://myweb.tiscali.co.uk/aecmilitant/matador4/pic1.jpg)
ALCO Matador 4x4 artillery tractor,this is the British 4x4 truck and tractor and it can tow up to 6.5 tons and has a top speed of 36mph. It has an armoured body and is powered by a 95hp AEC diesel engine. 100 will be purchased in 1942.
![](http://miliblog.co.uk/wp-content/uploads/2010/03/bedford-ol-3ton-4x2-cargo-mdf-475-f-300x193.jpg)
Austin Argentina Fabrica de Aumotobiles (AAFA) K3, a standard truck produced locally in both 6x2 and 4x2 variants. In 1942 the Army ordered 350 of each type. All will be flatbed lorries but other variants are planned.