The name "Hor-aha" means the Fighter. On King Aha's monuments, there are some indications mentioning his wars against the Libyans and the Nubians. Moreover, there is a reference to some religious ceremonies like his coronation ceremony.
After Narmer's death, Hor-aha ascended the throne and became the first king of the First Dynasty. Perhaps, he may be identified with Menes of the classical historians. In that case, he would be the founder of the Thinite Period (First Dynasty). If he was the same person as Narmer, then he was the cult inaugurator of the Crocodile-god, Sobek in the region of Faiyum as well as the Memphis founder (some 20 miles south of the apex of the Delta, near the natural frontier between the North and the South). He chose this place to be the capital Memphis, because of its strategic position to control both Upper & Lower Egypt. Memphis was at the top of Upper Egypt and belonged to Lower Egypt. Aha controlled the Northerners, and settled in Lower Egypt to be ready to attack the Northerners at any time. This was the place of the different Egyptian capitals through ages.
The new capital was known as Mn-nfr and latter on, Memphis. Manf was called 'The White Wall', which is the wall surrounding the country.
According to this strategic point, Hor-aha ruled the newly-united Egypt where he took his new capital and built a great temple dedicated to the god Ptah, who remained the patron deity of the city throughout its long history. Here also, on the desert edge behind the city, he set up his northern tomb, the first of a long series of funerary monuments which were to be built by his successors. He would probably have established both his administration and the cult of the Apis-Bull at Memphis. It is likely that he also organized the newly unified land by starting a policy of conciliation with the North, which is deduced from the fact that the name of his wife, Neith-hotep (may Neith be pleased), which was formed from the name of the goddess Neith, originally worshipped at Sais in the Delta. The tomb of Neith-hotep, excavated at Niqada, was provided with a large amount of objects including a tablet bearing the name of Aha.
It seems that Aha founded a temple of Neith at Sais and celebrated the festivals of Anubis and Sokar as well as his own royal jubilee or Sed-festival.
Aha Reign was peaceful, except for a series of wars against the Nubians that he defeated. Later, he established his rule as far up river as the first cataract. He also defeated the Libyans and established trade relations with Syria and Palestine. These military and economic initiatives were bore by his successors. The reign of Aha, which must have ended about 3100 BC, was thus reasonably well-documented. He had two tombs: one at Saqqara and the other at Abydos.