Alexander the Great was surrounded by close friends who served as his generals in his Calvary (which Alexander commanded personally) as well as in his regular army. His generals were as follows, Cassander, Ptolemy, Antigonus, Seleucus, and Lysimachus. Cassander knew Alexander for the longest time, many historians say that they knew each other since practically birth. They studied under Aristotle at the same time, and Cassander’s father even served under Alexander’s father as regent of Greece. Despite this long relationship, they were not close friends, however despite them not being friends Alexander couldn’t deny Cassander’s military knowledge and military prowess. Ptolemy was officially son of Lagos; however, it was rumored that he was actually Philip’s half son, which would have made him Alexander the Greats half-brother. Despite being much older than Alexander and most of the other generals, he still became one of Alexander’s best friends and one of his seven bodyguards. Antigonus was one of the older generals that Alexander had, he was a great general. He was a part of all of Alexanders campaigns and was given territory during Alexanders reign. Lysimachus was one of Alexander the Great’s trusted bodyguards and a member of his Companion Cavalry, he was not originally a citizen of Macedonia but after gaining citizenship he showed unwavering loyalty to Alexander the Great, and followed him into every battle.