On 1 April 1939, the success of the Nationalists meant that the Italians now had a friendly regime in the western Mediterranean. Of the approximate 78,500 men sent to Spain, 2,989-3,819 were killed and about 12,000 (10,629) were wounded. Those casualties were mostly caused during the Catalan and Aragonese Offensives, about 44% of the deaths and 43% of the wounded, and the rest during the Guadalajara, Santander and Levante offensives. The Italian military left behind roughly 3,400 machine guns, 1,400 mortars, 1,800 artillery pieces, 6,800 vehicles, 160 tanks, and 760 aircraft. But, while the military equipment represented a loss to Italy's war inventory, most of the equipment was outdated. The financial cost of the war was bigger. The cost of the CTV to Italy amounted to between 6 and 8.5 billion lire. At 14 to 20 percent of annual expenditure, this represented an immense drain on the Italian economy. The high cost of the Spanish expedition further limited Italy's economic output in the period leading up to World War II.