Commander Farsight - Way of the Broken Sword: The initial engagements against the Orks were intended to re-establish supply routes and test the greenskins' defences and capabilities in the meantime. Using Hunter Cadres skimming the surface of the world in Devilfish transports and flight-capable Battlesuits, he experimented with the enemy by killing enough Orks from long range to ensure their scattered mobs were on the brink of panic. Almost without exception, it was the largest Ork in each group that restored order. The simplicity of their military structure was such that it had at first been overlooked -- in the Ork psyche, might made right, and nothing more. Another observation O'Shoh made was that whenever his troops struck the milling Ork armies and faded away, almost immediately, fighting would erupt even if no foe was left to engage. The Orks would take any excuse to attack each other. Leadership challenges, theft of property, even careless remarks would flare up into brawls. Recordings of this were taken and sent back to the mobile headquarters O'Shoh had established, a disc-shaped command centre that constantly prowled the dunes on a cushion of anti-gravitic energy.Next came a year-long period known as the Great Thinning. Farsight ordered forward stealth contingents and Battlesuit teams to patrol the dunes, locating and destroying the largest Orks in each mob with pinpoint fire before disappearing without a trace. This inevitably sent the rest of the Orks into a frenzy of violence as they cast around for their persecutors before turning on each other. Blood would fly after each kill as the Orks fought over who was to take command, and the body count climbed steadily higher. As more and more monitor drones reported back to High Command, O'Shoh watched every recording with cold fascination. Before long, he had deciphered not only the crude system of glyphs the Orks used as a writing tool, but also the guttural Ork tongue. Soon, he was telling his aides what would happen next in each recorded event before it had unfolded. His officers joked that he must have seen the recordings already, but they knew full well that their commander had simply come to understand his foe well. His command staff were soon referring to him by a new moniker, Shovah, or "far-sighted."The knowledge gleaned from these intercepted messages slowly filtered into the Fire Caste's military doctrine. Wherever the Ork glyphs for "Boss," "Mek" or "Dok" appeared on an Ork vehicle, the Hunter Cadres would prioritise their destruction with concentrated Hammerhead fire and XV88 Broadside Battlesuit support, slowing Ork response times to a crawl. Though the T'au could not form the syllables of Ork speech, O'Shoh's Earth Caste allies cut audio snippets of Orkish challenges and insults into the comms networks that the invaders had looted from fallen T'au; delivering the right Orkish insults at the right time, O'Shoh drove a wedge of dissent between every clan and tribe roaming the desert, sparking a series of minor wars in the process. Within a year, the greenskinned beast that had invaded Arkunasha was chewing on its own tail. O'Shoh's tactics had distracted the Orks to such an extent that T'au forces were able to get food and water to the people trapped within the bio-domes and free the remains of the Arkunashan Fire Caste, further bolstering their ranks.