Having eliminated Darius, Alexander was still faced with the task of securing his new empire. Toward this end he engaged in numerous battles in Afghanistan and dealt with rebellions and plots in his conquered territories.
Internal Changes
Now that he was king of Persia, Alexander began to adopt Persian dress, at least when dealing with Persian subjects. With his Macedonians he still dressed as a Greek, but this did not entirely quell the grumbling among his officers.
Other changes were more troubling. For the first time, the Greeks were made members of his empire, rather than the special allies they had been. The Macedonians were troubled not only by his adoption of Eastern customs, but even more by his appointment of Eastern officials. A number of plots and rebellions were hatched, but he dealt with each of them. Most of the trouble came from his officer corps; his troops were still intensely loyal.
North and East
Alexander launched two years of hard campaigning in Afghanistan, pressing as far north as the Oxus River. This was wild, hard country, whose natives were master horsemen. The further Alexander progressed, the further he seemed to want to go. At last, he announced his intention of crossing the Hindu Kush and conquering India.
