In 1924 the Polish government ordered a large series of license-built, 3-ton Berliet CBA lorries and 1.5-ton SPA 25C Polonia trucks.
The company started building a new factory in Czechowice near Warsaw to accommodate the new production lines, but construction was slow.
Eventually, the Polish Army agreed to buy 400 Berliets from France and allowed the Ursus company to focus on SPA production.
[2] Ursus A was basically a modification of the Italian truck, adapted to harsh Polish weather and poor roads.
Over time, additional modifications were made (notably three types of cabs), which led to a range of variants being produced.