Complex sentence: However these troops were the leader's personal bodyguard and were usually not expected to scale a wall or charge home, instead troops trained and equipped to emulate the skills and arms of the military elite were used and if any survived they usually joined the elite.
Split into simpler sentences: However these troops were the leader's personal bodyguard, and were usually not expected to scale a wall or charge home. Instead, troops trained and equipped to emulate the skills and arms of the military elite were used, and if any survived they usually joined the elite.