Umma in the context of "Gu-Edin"

The phalanx (pl.: phalanxes or phalanges) was a rectangular mass military formation, usually composed entirely of heavy infantry armed with spears, pikes, sarissas, or similar polearms tightly packed together. The term is used today to describe the use of this formation in ancient Greek warfare, but ancient Greek writers used it more broadly to describe any massed infantry formation regardless of its equipment. In Greek texts, the phalanx may be deployed for battle, on the march, or even camped, thus describing the mass of infantry or cavalry that would deploy in line during battle. They marched forward as one entity.

The term itself, as used today, does not refer to a distinctive military unit or division (e.g., the Roman legion or the contemporary Western-type battalion), but to the type of formation of an army's troops. Therefore, this term does not indicate a standard combat strength or composition but includes the total number of infantry, which is deployed in a single formation known as a "phalanx".

Dhi Qar Governorate (Arabic: محافظة ذي قار, romanized: Muḥāfaẓat Ḏī Qār, Arabic: [muħaːfaðˤat ðiː qaːr]) is a governorate in southern Iraq, in the Arabian Peninsula. The provincial capital is Nasiriyah. Prior to 1976 the governorate was known as Muntafiq Governorate. Thi Qar was the heartland of the ancient Iraqi civilization of Sumer, and includes the ruins of Ur, Eridu, Lagash, Larsa, Girsu, Umma, and Bad-tibira. The southern area of the governorate is covered by Mesopotamian Marshes.

Lugal-Zage-Si (LUGAL.ZAG.GE.SI 𒈗𒍠𒄀𒋛; frequently spelled Lugalzaggesi, sometimes Lugalzagesi or "Lugal-Zaggisi") of Umma (died c. 2334 BC) was the last Sumerian king before the conquest of Sumer by Sargon of Akkad and the rise of the Akkadian Empire, and was considered as the only king of the third dynasty of Uruk, according to the Sumerian King List. Initially, as king of Umma, he led the final victory of Umma in the generation-long conflict with the city-state Lagash for the fertile plain of Gu-Edin. Following up on this success, he then united Sumer briefly as a single kingdom.

The Stele of the Vultures is a monument from the Early Dynastic IIIb period (2600–2350 BC) in Mesopotamia celebrating a victory of the city-state of Lagash over its neighbour Umma. It shows various battle and religious scenes and is named after the vultures that can be seen in one of these scenes. The stele was originally carved out of a single slab of limestone, but only seven fragments are known to have survived up to the present day. The fragments were found at Tello (ancient Girsu) in southern Iraq in the 1880s and are now on display in the Louvre. The stele was erected as a monument to the victory of king Eannatum of Lagash over Ush, king of Umma. It is the earliest known war monument.

The Early Dynastic Period (abbreviated ED Period or ED) is an archaeological culture in Mesopotamia (modern-day Iraq) that is generally dated to c. 2900 – c. 2350 BC and was preceded by the Uruk and Jemdet Nasr periods. It saw the development of writing and the formation of the first cities and states. The ED itself was characterized by the existence of multiple city-states: small states with a relatively simple structure that developed and solidified over time. This development ultimately led, directly after this period, to broad Mesopotamian unification under the rule of Sargon, the first monarch of the Akkadian Empire. Despite their political fragmentation, the ED city-states shared a relatively homogeneous material culture. Sumerian cities such as Uruk, Ur, Lagash, Umma, and Nippur located in Lower Mesopotamia were very powerful and influential. To the north and west stretched states centered on cities such as Kish, Mari, Nagar, and Ebla.

The study of Central and Lower Mesopotamia has long been given priority over neighboring regions. Archaeological sites in Central and Lower Mesopotamia—notably Girsu but also Eshnunna, Khafajah, Ur, and many others—have been excavated since the 19th century. These excavations have yielded cuneiform texts and many other important artifacts. As a result, this area was better known than neighboring regions, but the excavation and publication of the archives of Ebla have changed this perspective by shedding more light on surrounding areas, such as Upper Mesopotamia, western Syria, and southwestern Iran. These new findings revealed that Lower Mesopotamia shared many socio-cultural developments with neighboring areas and that the entirety of the ancient Near East participated in an exchange network in which material goods and ideas were being circulated.

Aga (Sumerian: 𒀝𒂵 Aga, Agga, or Akkà; fl. c. 2700 BC), commonly known as Aga of Kish, was king in the first dynasty of Kish during the Early Dynastic I period. He is listed in the Sumerian King List as the 23rd king of Kish and is listed in many sources as the son of Enmebaragesi. The Kishite king ruled the city at its peak, probably reaching beyond the territory of Kish, including Umma and Zabala.

The Sumerian poem Gilgamesh and Aga records the Kishite siege of Uruk after its lord Gilgamesh refused to submit to Aga, ending in Aga's defeat and consequently the fall of Kish's hegemony.

Ensi (cuneiform: 𒑐𒋼𒋛 pa.te.si Sumerian: ensik, "lord of the plowland"; Emesal dialect: umunsik; Akkadian: iššakkum) was a Sumerian title designating the ruler or prince of a city-state. Originally it may have designated an independent ruler, but in later periods the title presupposed subordinance to a lugal.

For the Early Dynastic Period (about 2800–2350 BC), the meaning of the titles en, ensi and lugal cannot be differentiated clearly: see lugal, ensi and en for details. Ensi may have originally been a designation of the ruler restricted to Lagash and Umma. The ensi was considered a representative of the city-state's patron deity. In later periods, an ensi was normally seen as subordinate to a lugal. Nevertheless, even the powerful rulers of the Second Dynasty of Lagash (c. 2100 BC) such as Gudea were satisfied with the title ensi.