Complex sentence: Using the "Shorncliffe Method", devised by Lt-Col Kenneth Mackenzie, the soldiers were taught to think for themselves and act on initiative, a high proportion of them were literate, which was unusual for the time.
Split into simpler sentences: Using the "Shorncliffe Method", devised by Lt-Col Kenneth Mackenzie, the soldiers were taught to think for themselves and act on initiative. A high proportion of them were literate, which was unusual for the time.