Strategic Preparations for the Persian Invasion

Alexander strategized his return to Macedonia following the completion of his Southern campaigns, prioritizing necessary preparations for the impending invasion of Persia. Key actions included consolidating financial resources, establishing governance in his absence, and meticulously planning the invasion. The treasury benefitted from substantial revenues linked to Philip's investments and cash from the sale of Theban captives. Governance was entrusted to Antipater, who received over 10,000 soldiers to maintain peace in Macedonia. The groundwork for the invasion of Persia had been laid for years, with significant forces already stationed under Parmenio, tasked with securing strategic locations, dismantling Persian naval bases, and fostering goodwill among locals. Alexander intended to advance far into Persian territory, inspired by historic military campaigns. The urgency of action was underscored by prior defeats faced by the Expeditionary Force, making swift movement crucial as a brief opportunity presented itself. Thus, in the spring of 334 BC, Alexander set forth, aiming to fulfill his ambitious aspirations in the East.