The so-called Alexandrian War was fought between the supporters of Ptolemy XIII and his sister Cleopatra VII, to whom Caesar had promised to exercise power on an equal footing with his brother. Ptolemy's advisor Pothejnos did not like this idea and decided that with an army of 20.000 soldiers, he could easily defeat Caesar's 4000-strong army. Being trapped, Caesar called for reinforcements, which arrived from Rome, Syria, and Judea. In the decisive clash, Ptolemy XIII was killed and Cleopatra became queen of Egypt.
