Death Korps of Krieg would defeat any military force in a battle on land

The apocalypse scenario has been chosen and I agree upon it, and now, for my arguments. First, we all know who the Death Korps of Krieg are. Faceless, fearless, loyal, autonomous weapons of the Imperium of Man's military. The Death Korps Kriegsman are a force to be reckoned with, soldiers who know no fear. All are willing to walk into an enemies heavily fortified defenses if it were asked of them, each of them willing to fight a Necron Flayed One in melee combat when given the opportunity. Each Kriegsman is the living embodiment of repent, they portray what it means to be a soldier, they question no order and take suggestions as though they were commands. Krieg regiments actively volunteer to go to the most hazardous of warzone, and kriegsman actively volunteer to go on suicide missions when they are suggested. Commanders are held with the utmost importance, but the objective and its victory are priority over all lives. Now then, the Krieg armament usually consists of hundreds of heavy weapons, that includes artillery and gun emplacements. Standard weapons of choice used by Guardsmen are a special type of Lasgun which possesses fewer lasbolts per clip, but the lasbolts punch harder and straighter than other versions of the Lasgun. Shotguns are commonly used by Death Korps Engineers, and Stubbers utilized when in the myriad trenches the Death Korps of Krieg are so proficient in creating. All Death Korps units bear a melee blade of some kind, be it a bayonet, a sword, or a trench shovel or knife. Heavy weapons found among Death Korps infantry include Plasma guns, Meltas, Rocket Launchers, Grenade Launchers, and Flame units. Death Korps don't typically field many vehicles either, with Sentinel Scout Walkers being a more common sight than a Leman Russ Battle Tank. However, the Death Korps are siege experts and masters of the wars of attrition. As such, artillery is fielded en masse, countless shells for each gun are transported to load such weapons. The morale of the Death Korps is also one of impeccable standards, with each soldier being an efficient weapon in his own right, all are fearless and all are willing to die while fighting the enemies of the God-Emperor. In an Apocalypse scenario, it would not be uncommon for Death Korps forces to field numerous Regiments, with Kriegsman numbers reaching the millions. One regiment alone is capable of making many foes cower as their faceless masks walk the battlefield to tear them apart, but with such a large force of Kriegsman being fielded, any foe, even the Tyranids, would have trouble breaking any defensive line and holding off any major assault. Titans from the Mechanicum would surely accompany the Death Korps regiments in an apocalypse scenario, albeit, they might more than likely just be a few Warhounds equipped with long range suppression weapons, one or two Imperators would surely make the field as well. Moving on, the zeal of the Death Korps is one to be reckoned with. The Tau forces consist of troop variations, Fire Warriors are the standard infantry of the Tau Empire and are Tau themselves, they normally take with them a Pulse Rifle, which is capable of blasting right through Krieg armor. However, Kriegsman do not shy away from any battle and do all they can to push their lines directly into that of their enemies. As a result, Fire Warriors caught in the vicious melee that is ensued by Death Korps forces would be slaughtered, especially considering that Fire Warriors are not meant for melee combat and rely heavily upon their speed and range to destroy their enemy. Yet, the Death Korps make excellent use of Artillery, shelling entire regions of cover to ensure the enemy cannot use it, and then marching legions of infantry through no man's land while artillery commence a rolling barrage, effectively making the Death Korps invisible in the clouds of dust and explosions that covers their advance. Tau lines would be overrun by Death Korps forces, and anyone who isn't shot by one of those hard hitting lasguns is skewed by the bayonets and swords the Kriegsmen charge in with. Kroot Carnivores are the melee specialist of the Tau, yet, that is all they are truly good for. Kroot guns fire solid slugs and the Kroot themselves don't wear combat armor, making them particularly vulnerable to Death Korps guns, as a side note, the Death Korps also excel in close quarters combat due to their trench warfare and attrition like tactics, making them a formidable foe against any Tau melee specialist. Drones and vehicles are a great strength of the Tau, yet, Death Korps forces do not treat them as though they are much dangers at all. Soldiers would fire upon any available targets, and the heavy hits of their lasguns are capable enough to blow a drone out of the sky with one lucky strike. Tau vehicles excel in speed, range, or suppression, but their armor is nothing when compared to nearly any vehicle fielded by the Imperium. Death Korps forces would pursue and surround vehicles, or pull pins on Krak grenades and charge willingly into the Vehicle to make certain of its destruction. As an added plus to the Death Korps themselves, they are not as narrow minded as many would think. Death Korps tacticians are surprisingly intelligent and versatile, being able to determine points of strategic value and managing every aspect of a plan to ensure its success. With artillery being an aspect in nearly every plan and the forwarding of forward trenches to make sure that Krieg forces can make it from one point to another as proficiently as possible, all while moving guns forward to bombard from afar. The Titans that would be fielded in an Apocalypse scenario would also play a great deal in the battle. It is Death Korps of Krieg belief that every weapon and resource that is available should and will be utilized, no price is to great so long as the enemy is dead under their boots. With this in mind, Titans would be directed towards key objectives for the Tau, such as landing zones and Drone operation towers as well as strategic locations. The Imperator Titans are also capable of carrying numerous squads of infantry, allowing Death Korps forces to reside inside the Titan as it makes its earth destroying trek into the lines of the Tau, deploying the squads right into the midst of the Tau forces and therefore, maximizing the amount of damage the Kriegsmen can do. Speed would not play a huge role in a battle against the Death Korps either, and speed is what the Tau rely on besides range. Yet, even that is cancelled out by the Death Korps. The Death Korps only attack when opportunity is shown, as a result, Krieg forces would reside in their trenches and wait for incoming assaults from Tau forces. With Artillery guns placed at every available point behind or in the trenches, Vehicles utilized by the Tau would surely be in trouble. With shells capable of reducing a building to no more than dust, and a range that far overlaps even the Railgun of the Tau Hammerhead. Gun emplacements all over the trenches, manned by Krieg soldiers, would be ready to unload their arsenal with boxes of ammo being fed into their chambers, and right when the Tau seem close enough, the Death Korps charge them on open territory where no cover exists for either side. And a vicious melee would break out, Krieg gunners picking off Tau units while Kriegsman slaughtered Tau forces. Any battle lost by the Krieg would also result in more Tau deaths, since it is Tau nature to offer every available chance for their enemies to lay down their arms and join them. Kriegsmen see their welcome as an insult to their loyalty, and since all Kriegsmen are willing to do die as a means of repent for their ancestors betrayal, any soldier still breathing would stand up and attempt to take down as many Tau soldiers as he could. Making surrender an obsolete tactic for the Tau to use against the Death Korps. Overall, in all aspects, the Death Korps manage to find a way to screw over their foes. They have speed, we have lots of guns and ammo, they have range, we have farther reaching artillery, they have diversity in their forces, we have men willing to blow themselves up if they have a grenade and see a group of them. I await my opponent's opening and possible counter arguments.