Complex sentence: He was instructed by the British to attack when an opportunity presented itself and on 3 July, assaulted the base of Saïo Mountain and in the afternoon Gazzera sued for peace.
Split into simpler sentences: He was instructed by the British to attack when an opportunity presented itself. On 3 July, he assaulted the base of Saïo Mountain and in the afternoon Gazzera sued for peace.