Complex sentence: They formed a rear guard of 100 soldiers with 2 machine guns and 17 artillery guns from the 7th Division and 300 soldiers, while four machine guns and seven guns from the 20th Division also made a desperate attempt to hold the British Empire attack.
Split into simpler sentences: They formed a rear guard of 100 soldiers with 2 machine guns and 17 artillery guns from the 7th Division and 300 soldiers. Four machine guns and seven guns from the 20th Division made a desperate attempt to hold the British Empire attack.