Complex sentence: The 10th West Yorkshire Regiment, was required to advance close by Fricourt and suffered the worst battalion losses of the day and a company from the 7th Green Howards, made an unplanned attack directly against the village and was annihilated.
Split into simpler sentences: The 10th West Yorkshire Regiment, was required to advance close by Fricourt and suffered the worst battalion losses of the day. A company from the 7th Green Howards, made an unplanned attack directly against the village and was annihilated.