Complex sentence: On his arrival at Cenchreae, the port of Corinth, messengers from Nero met Corbulo, and ordered him to commit suicide, which he loyally obeyed by falling on his own sword, saying, "Axios!".
Split into simpler sentences: On his arrival at Cenchreae, the port of Corinth, messengers from Nero met Corbulo and ordered him to commit suicide. He loyally obeyed, and fell on his own sword, saying, "Axios!".