Complex sentence: At this point X Corps was comprised of two infantry divisions, the 10th Indian Infantry division was positioned in Mersa Matruh proper, while the 50th British was east of the town protecting the eastern approach.
Split into simpler sentences: At this point X Corps was comprised of two infantry divisions. The 10th Indian Infantry Division was positioned in Mersa Matruh proper, while the 50th British Infantry Division was east of the town protecting the eastern approach.