What happened March 1937 AD in Spain

A similar Nationalist offensive, the Battle of Guadalajara, was a more significant defeat for Franco and his armies. This was the only publicized Republican victory of the war. Franco used Italian troops and blitzkrieg tactics; while many strategists blamed Franco for the rightists' defeat, the Germans believed it was the former at fault for the Nationalists' 5,000 casualties and loss of valuable equipment.