Retaliation
After Mar Shimun XIX Benyamin was assassinated the Assyrians took Arms and fight back against the Turks. The Assyrians won several battles when they had large forces but where often separated and defeated. Mar Shimun's most famous quote is "It is impossible for me and my people to surrender after seeing the atrocities done to my Assyrian people by your government; therefore my brother is one, my people are many, I would rather lose my brother but not my nation."
Agha Petros
Agha Petros lead the fight in Iran. The Allies approached him during WWI to help fight the Ottoman Empire. They had a couple of great victories most notably at Suldouze where 1,500 Assyrians defeated 8,000 Turks, but soon after these successes Russia withdrawal from the war and the collapse of the Armenian armed resistance affected them greatly leaving the Assyrians with no supplies and cut off from help. In 1918 200 villages were destroyed and thousands of Assyrians died of famine, disease, and forced marches.