All that the Emperor requires of us Guardsmen is that we hold the line, and die fighting. Its what we do best. We die standing,

All of the worlds of the Imperium shall look to their own defense. They shall also look to the defense of the Imperium, and the prosecution of such wars as the Emperor in His wisdom shall decree.
Therefore, each populated planet shall raise and maintain its own planetary defense force, and from the ranks of this defense force it shall provide the best of its troops for recruitment into the Imperial Guard, according to such requirements as shall be imposed by the Administratum.

Codex Exercitus

Infantry win firefights. Tanks win battles. Artillery wins wars.
Old saying amonst Imperial Guard artillery officers

Fifth Company, this is the moment of truth. You will not fear. You will not falter. You will not give a single step to the enemy.
General Lukas Alexander

Enemies of the Imperium, hear me. You have come here to die. The Immortal Emperor is with us and we are invincible. His soldiers will strike you down. His war machines will crush you under their treads. His mighty guns will bring the very sky crashing down upon you. You cannot win. The Emperor has given us his greatest weapon to wield. So make yourselves ready. We are the First Kronus Regiment, and today is our Victory Day.
General Lukas Alexander's address to enemy forces in Victory Bay

The Imperial Guard is the primary fighting force of the Imperium, so numerous in size that even the Departmento Munitorum cannot place a figure on the number of Guardsmen under arms at any one time; the daily lists of new recruits and toll of casualties can run into the millions in a single day. It would be infeasible trying to put any exact number on the strength of the Guard; however, it is believed that there must be many billions of Imperial Guardsmen, divided into millions of regiments. This absolute numeracy provides the Guard with its main power; their ability to deploy in numbers that, eventually, result in victory. Attacking in seemingly endless influxes across battle-zones, charging forth under the cover of massive barrages and delivering massed lasgun volleys, in the Guard the individual Human soldier may appear a lost thing, almost forgotten. Yet the actions of these anonymous soldiers daily decide the fate of worlds.

The Guard forms the very backbone of the Imperium; without it, Mankind would surely perish. Whilst Guardsmen are hardly the equals of Space Marines, fighting neither with the advantages of genetic enhancement or the most powerful personal weaponry, the Guard possesses the courage and the manpower to face and annihilate the enemies of the Emperor across the galaxy.

Ranks:
Whiteshield [WS]
Guardsmen [G]
Guardsmen Sergeant [GS]
Veteran Guardsmen [VG]
Veteran Guardsmen Sergeant [VGS]
Storm trooper [ST]
Storm Trooper Sergeant [STG]
Platoon Commander [PC]
Company commander [Cc]
Regimental commander [Rc]
General #8
General Militant [Gm] #6
Lord Solar Macharius [LSM] #0

FOR THE EMPEROR, THE IMEPRIUM AND FOR THE IMEPRIAL GUARD!!