Both sides had suffered huge losses, with estimates ranging from 50,000–60,000 to 110,000 casualties, as well as the loss of large numbers of aircraft (the Republicans between 130 and 150). The Nationalists had lost most of their best officers and most of their tanks and lorries needed repairs or spare parts, and the Republican army had lost most of their weapons and experienced units. Nevertheless, after Franco signed a new mining law making huge concessions to the German government, Germany sent new weapons to the Nationalist forces and in December, Franco launched an offensive against Catalonia.