Every army needs its foregoers, to see what lies before the battlefield may end a skirmish rather than start it. You're the scout.
The grunt is the very bulk of the Horde army, loyal. fierce and trained to endure the savage chaos of war. Standing victorious with their commander or lying in defeat, they find acceptance in one's own death.
Individuals that have risen to lead squads of grunts and scouts, by showing their might on the battlefield with both blade and mind- the sergeant's perhaps most important task is to control their unit's fury and anger that without discipline and orders may lead to more harm than good for the entire army. When the mire of the battleground becomes too thick, its the sergeant who holds the reins to victory, if no superior is present.
Senior sergeant/First sergeant/Warbringer
Overseers of the battlements and are battle-hardened fighters. As the conflict commences the superior sergeants controls the Kor'kron warriors on behalf of the general and warlord. They're essential for communication between the various ranks and are often in possession of several signaling flares or horns of war. The Warbringer especially is tasked with relay of communication as he is often seen in the core of the 'meatgrinder' as is his duty. Warbringer employs therefore multiple runners to make sure the information from the skirmish is brought back to the commanders for furthering opportunities to win the day. The Warbringer's boon comes in form of the red flag, strapped to a pole on his back. This makes its easier for the runners to find him, but also inspires the soldiers to fight beside the warbringer in order to not let the bannerman fall.
Stone guard/Blood guard
the revered guards of the Horde army, that upholds the security of either region, a warlord's homestead or the safety of a city. The stone guard have access to whole squadrons of grunts if it benefits his -burden's- safety, such as mentioned above. The blood guard acts as personal security for commanders of high value and standing, such as general, warlord and high warlord. Some even rise to become the warchief's personally wardens and trusted advisers, hand plucked for their loyalty, abilities and knowledge of assassins.
Some of the most experienced and best fighters of the Horde army, these positions within the chain of command holds several duties and privileges. As Legionnaire and Centurion, you will be able to choose your own warriors for your squadron and finding yourself close to the highest figures of the Horde's military wing. This position also offers you the opportunity to become Kor'kron, the fighting elite of Thrall's people. Your duties is to fight battles not only on the field, but in darkness and the sky if required. The Legionnaire and centurion often tread water where grunts never imagined a warrior could be fighting, when the battle starts. Their missions varies from flanking, operate behind enemy lines or even surgeon tactics that involves taking out prime targets of the enemy's army, like shot callers and commanders.
The captain's training is unique in the way, that they must be masters of the sea and everything that comes with a territory that sinks everything not capable of keeping itself Afloat. A captain in the ground field are are only surpassed by the generals and their lieutenants. A captain may control huge portions of the Horde army, and is often present in the outskirts of the conflicts, sending out centurions and legionnaire after assessing the enemy's most valuable targets.
These are positions that does not require the attendance to the battle, however the title of general in any form inspires the army- that the general's tactics are sound, for the strategist himself/herself is present together with his men. The lieutenant general often works as an adviser to the general in terms of planning the correct and best tactics and also serves to champion the general on the field of battle.
Warlord and High Warlord
The pinnacle of the Horde army, to be warlord is the highest honor and position one could dream for as a grunt, only surpassed by the High Warlord. The warlord often serves to oversee promotions within the ranks and technology that must always advance and be produced to the army. The warlord does not need to physically tend to these matters of weaponry production and measuring individuals up for promotion, however the glory as well as the blame lands on the warlord should success or failure happen.
The High Warlord is the fist of the Warchief and one of his closest advisors that reports the military ongoings of war in any aspect. It is the duty of the high warlord to know everything that concerns the Horde military in order to serve his purpose, being the lord of war.