Simplify the following text for a Grade 11 native English-speaking person.
Original: With Carlo Rosselli , Berneri organized the first column of Italian volunteers to fight in the Spanish Civil War against Francisco Franco 's attempted takeover , where he took part in the battles of Monte Pelado and Huesca ( in Aragon ) together with the Spanish anarchists of Francisco Ascaso Column and the Italians of the Matteotti Battalion .
Simplified: With Carlo Rosselli , Berneri organized the first troop ( column ) of Italian volunteers to fight in the Spanish Civil War against Francisco Franco .