The Armenian–Parthian War or Parthian conquest of Tigran (88-86 BCE) refers to when the armies of

Tigranes the Great Tigranes II, more commonly known as Tigranes the Great ( hy, Տիգրան Մեծ, ''Tigran Mets''; grc, Τιγράνης ὁ Μέγας ''Tigránes ho Mégas''; la, Tigranes Magnus) (140 – 55 BC) was King of Armenia under whom the ...

victoriously entered Northern Mesopotamia and the kingdoms of

Osroene Osroene or Osrhoene (; grc-gre, Ὀσροηνή) was an ancient region and state in Upper Mesopotamia. The ''Kingdom of Osroene'', also known as the "Kingdom of Edessa" ( syc, ܡܠܟܘܬܐ ܕܒܝܬ ܐܘܪܗܝ / "Kingdom of Urhay"), according to ...

and

Atropatene Atropatene ( peo, Ātṛpātakāna; grc, Ἀτροπατηνή), also known as Media Atropatene, was an ancient Iranian kingdom established in by the Persian satrap Atropates. The kingdom, centered in present-day northern Iran, was ruled by A ...

pledged their loyalty and support to Tigranes the Great. Many rulers and kings of the time called Tigranes, the "King of Kings" because of his wealth and power.

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* * * Wars involving Armenia Kingdom of Armenia (antiquity) Wars involving the Parthian Empire Military history of Armenia 80s BC conflicts 1st century BC {{battle-stub