The first aerial combat between the biplanes took place on 14 June over Amseat. Tenente Franco Lucchini, of 90a Squadriglia, 10° Gruppo, 4° Stormo, flying a CR.42 from Tobruk, shot down a Gladiator; it was the first claim made against the RAF in the desert war.[63] On the afternoon of 24 July, CR.42s and Gladiators clashed over Bardia. A formation of 11 CR.42s from 10° Gruppo, backed by six more from the 13° Gruppo attacked a British formation of nine Blenheims that was attacking Bardia, and was in turn reportedly attacked by 15 Gladiators.