Welcome to the Aleph Sector Campaign blog, Sheffield University Wargames Society's narrative based campaign set in Games Workshop's Warhammer 40,000 universe. If you are new here, have a read of the Aleph Sector Campaign System. This will explain what the campaign is, how it works etc. If you are really keen you can download the entire ten year history of the campaign! If you are a new student in Sheffield, visit the Wargames website from the links section on the right to get involved!
Wednesday, May 12, 2010
Battle of Vaden
The two large concrete towers in the centre of the city housing arrays of flak guns and surface-to-air missile defenses prevented any major aerial operations, so Force Recon units started to test the defenses of the city, trying to find a weak point. After days of mapping the districts and fortifcations surrounding the city, an area to the north with minimal defense batteries was chosen as the assault point. Reinforced by units of Librians and the 1st Ultramarine Company, the Task Force was hastily organised and prepared to launch their offensive.
Monday, May 10, 2010
Thok sends aid
With chaos losing on all fronts in the Perseus Deeps, especially in the systems closest to the Vastrid subsector, Admiral Thok decided to send a task force to aid his beleagured sometime ally on Bastien. A large force of cruisers along with the recently refitted battleship Mjolnir was sent to Bastien, via the Perseus run. Between Ares and Aethor however a force of Imperial warships commanded by Commodore Rawlings aboard the armageddon class Valiant was detected shadowing Thok's force. Thok immediately detatched the cruisers Rheintochter and Hyrrokin, along with two other cruisers, and these engaged the Imperial task force in deep space.
Rawlings, commanding Valiant, along with the jovian class Bulwark, tyrant class Centurion and dauntless class Firedrake, headed for the chaos force, keeping the under-armed carrier to the rear while attempting to bring the chaos fleet into battle on favourable terms. The commander of the chaos fleet however was very canny, keeping his fleet together in tight formation after realising the Imperial force had no nova cannons, and fighting abeam, firing lances from long distance and launching fighters to protect his fleet from torpedo attacks.
By keeping the Imperial fleet at arms length the chaos commander turned the battle into one of broadsides, something that at long ranges the Imperium could not win. The combined firepower of two devastations, a carnage and an Acheron battlecruiser was too much for the Imperial cruisers, as the Firedrake, unable to get into range before coming under concerted attack from the chaos escorts, was hulked early on. The chaos commander then concentrated his firepower against the Valiant, and when she was crippled Rawlings was forced to disengage his force or risk annihilation. Three chaos escorts were destroyed but the chaos cruisers suffered only minor damage. Worse still, the bulk of Thok’s force was now on course to intercept Admiral Dreyer’s battlegroup around Bastien.
It now seemed that deliverance was about to come for the defenders of Bastien, and Admiral Thok must have gloried in the idea of his position as the saviour of the Claws of Lorek. Even though Dreyers force outnumbered his own, they would have to protect the invasion force and would not be able to manoeuvre effectively. Just as he prepared to exit the warp near Bastien, he was alarmed to receive reports of a large Tau fleet in the vicinity.
The Tau had somehow managed to slip a battlefleet of three explorer class and two hero class capital ships past both the Imperium and the chaos augurs, no doubt due either to Tau stealth technology or their lack of psykers. Suddenly Thok was forced to break warp (not even the Grand Admiral was mad enough to accept battle in the immaterium) and face a fleet of equivalent size.
Battle was joined with the Tau battlefleet maintaining close cohesion. Even so the Grand Admiral was able to get his fleet into a good position, but crucially, fatally, the order to fire was delayed as uncertainty about the exact range to the enemy caused Thok to hesitate. He was swiftly punished. Finding their range with precision using their messenger class escorts, a massive barrage of railgun and ion cannon fire ripped into Thok’s vessels. Minutes later the mantas arrived and after scant minutes the chaos fleet was badly mauled. Although Thok did manage to destroy one of the Tau capital ships, the chaos fleet suffered worse. Two cruisers exploded and the veteran Queen Hel was crippled. Angry and frustrated Thok fled, leading his vessels back into the warp and back to Mordecai, the Tau having ruined any chance in his becoming the saviour of chaos.
Imperial operation to secure minors continues
While Battlegroup Apocalypse began the invasion of Bastien the forces of the Imperium were in action across the Perseus Deeps to protect the flanks of this latest thrust. Three separate operations were undertaken to bolster the Bastien invasion, against three different foes, the intention being to prevent any of these enemies of the Imperium putting the invasion of Bastien in jepoardy.
The Blood Drinkers chapter were in action once again, this time conducting a lightning raid on Aornis, the closest planet of the chaos empire controlled by Moonface. Forces were dropped following a bombardment of the planet's major settlement although at first it seemed the raid - intended to inflict maximum damage on the Catechism - would be a failure, as the Blood Drinkers landed some distance from the rebel guard units defending the settlement. However the astartes forces quickly made up the ground, braving heavy gunfire, before falling upon the Catechism forces and inflicting a large amount of damage to the installations on Aornis which would prove critical if Moonface decidded to come to Bastien's aid.
Meanwhile on Gamordal, the most heavily fortified Ork planet in the Deeps, Cereberex guard units were deployed to expand the bridgehead secured by the Blood Drinkers in the previous week. Once again the Cereberex loyalistsproved their worth, delivering a crushing blow to the Ork forces of Da Verminator and taking three key Ork settlements, breaking the Orks' main defensive line. By 1005.010M42 the Imperium had managed to secure more than half the inhabited settlements of the minor planet, putting several hundred thousand greenskins to death and routing the remaining enemy forces.
The Blood Angels arrived at Minos, a Tau minor colony beseiged by the Imperium a day later, but found the Tau prepared and ready for their landing. With only 500,000 Tau on the planet conquered by commander Fastblade in 008M42, it seemed as if the Blood Angels, though small in number, would defeat the alien defenders with their superior fighting prowess. However a new commander had recently arrived, undetected by Imperial intelligence, which significantly bolstered the Tau defences. In a savage battle outside the single Tau settlement the Blood Angels were comprehensively defeated and forced to abandon their mission without inflicting significant damage, and only narrowly avoided the returning Tau fleet - also unknown to the Imperium until this moment.
In general, despite the reverse suffered on Minos, the Imperial operation against the Imperium's most dangerous foes had been a success, while the forces of Chaos faced a much tougher challenge in their attempts to secure dominance in the region. An ill fated mission by the Anticross to raid or set up a base on Gamador only brought more gloom to Lorek on Bastien. With further troops preparing to disembark to consolidate the bridghead on Bastien, now everything rested on the claws of Lorek and their allies being able to halt, and reverse the imperial crusade.
Sunday, May 09, 2010
Tarsis Major: Hopes of early Tau victory fade

On 0805.010M42, following a series of strike missions by the Tau Air Caste, remote sensors and orbital imagery pinpointed a powerful energy source at one of the target sites within the barrier mountains. Tau planners immediately dispatch a mobile task force under Shas'el R'mirr to investigate the source, situated close to the Imperial held Grenton mines.
On reaching the ruined settlement the task force advanced with caution, having identified the energy source as a damaged plasma reactor, an ancient artefact dating back to the dark age of technology. Sensors and advanced reconnaissance teams showed the site to be undefended but the Tau's caution proved well founded. As they drew close to the reactor the air shimmered as the bulky forms of the Imperium's feared Space Marines materialised around the reactor site.
Operating from a strike cruiser orbiting Tarsis Major, Marines of the Blood Angels chapter were able to beam directly into the combat zone with pinpoint accuracy thanks to a lock on the reactor's energy signature. Even so, their boldness cost them as one squad was lost in a teleporter mishap. Soon vicious close quarter fire fights erupted throughout the settlement with the Blood Angel's sustaining heavy casualties before closing with the Tau to engage them in hand to hand combat. They might have won the day against less experienced opponents, but this cadre were hardened veterans of the long running Tarsis campaign and they maintained strong fire discipline even as their comrades were butchered. Their numbers diminished, the Blood Angels had no choice but to fall back and try to slow the Tau from reaching the reactor with hit and run attacks. Shas'el R'mirr gave the order to scour the ruined settlement and the Tau under his command methodically cleared each cluster of buildings, flushing out their prey with barrages of smart missiles and gunning down the survivors as they were forced into the open.
As dusk turned into night the Tau finally secured the reactor, which was supplying power to the nearby mining operations at Grenton. When orbital surveillance identified a column of armoured vehicles exiting Grenton the Tau destroyed the reactor rather than risk it falling back into Imperial hands.
Even as Shadowstrike prepared for a new Tarsis offensive he realised that the Imperium's overwhelming dominance of space would have to be challenged. Fortunately, even as the fighting intensified on Tarsis new cadres and ships had arrived in the region to aid his efforts.
Now came the test. Many times before the Imperium had captured territory using armoured columns, but had then surrendered that territory to perfectly timed counter attacks launched by Shadowstrike’s forces. This time it would be different.
As in previous offensives the Imperial assault ran out of steam and Shadowstrike launched his highly mobile counter offensive, attacking the Imperial forces from three directions with carefully timed manoeuvres. The fighting was intense, but Jeffries’ had planned for the assault, being a veteran of the Tau wars and Shadowstrike in particular. This time his troops were arranged in mutually supporting dispositions, preventing the Tau from picking off his units when they were overextended. In stead of holding onto as much ground as possible, Jeffries retreated a little to strongpoints and then allowed the Tau to attack.
The fighting came to a head on the flanks of Jeffries’ salient, where strong Tau armoured formations, led by Hammerhead tanks, were prevented from breaking through by brave assaults from veteran units. With this armoured assault blunted and Tau crisis suits bottled up in a stalemate in front of the Librian main positions, the right flank became crucial. Kroot mercenaries and fire-warriors formed the main assault here, but Hellhound flame tanks decimated the kroot lines, blunting that attack as well.
By the second day the Librians were beginning to become desperate. The battle seemed to rage with ever greater intensity and neither side seemed willing to give up. The Librians were losing men at a horrific rate and it seemed as if the Tau would once again force an Imperial retreat, but just as the Librians were down to their last rounds the morale of the Tau cracked and the commander on the ground ordered a retreat from the Imperial positions.
The fighting subsided and with a great cheer the PDF reinforcements arrived to consolidate the Imperial victory. Casualties were heavy on both sides but this time the Librians had recorded a substantial, if not overwhelming victory over commander Shadowstrike. With the Imperial dominance in space and the chances of a swift victory on the ground dashed, Shadowstrike now knew that he would need reinforcements to finish off the Imperium on Tarsis.
Tarsis Major: Praetorians push south

With the Imperium asserting their dominance in space, General Cunningham authorised a new offensive on Tarsis, a “bite and hold” mission of attrition in the northern sector on Merrin, where the Praetorians were a lot more optimistic about a final Imperial victory than many in Cunningham’s camp.
This refusal to give up was evident in their attack as wave after wave of highly disciplined infantry marched into battle against Strongspear’s Tau on the north Mertock plain. Aided by artillery from the Mertock Mountains initially, the Imperial advance went well and on 2004.010M42 they had marched over 50 miles from their starting lines as the Tau withdrew rather than face taking horrendous casualties. This of course was the Imperial casualties, to trade lives for territory, something which proved successful. A month after it had started the Imperium had advanced nearly 100 miles, gained nothing of strategic significance and lost over 30,000 men. However they had achieved a victory and losses on the Tau side were not insignificant, as Strongspear had been forced to put up a fight to prevent the ex-Iron Warrior fort, a key strategic point on the front, from falling to the Imperium. Only an unexpected crack in Praetorian discipline, most notably in the ogryn units, had prevented the fortress from falling and the Imperium gaining a key strategic victory.
Fortunately Strongspear just did enough to prevent a meaningful Imperial success, while in the continent of Tuva Shadowstrike had bigger problems. Resupplied from space Cunningham’s Librian forces were preparing a new offensive, and another space marine strike cruiser had been detected in the Tarsis system.
Bastien landing successful
Finally, on 0605.010M42 the much anticipated invasion of Bastien got underway. Supported by Dreyer's battlegroup Apocalypse as well as the cruisers Relentless and Imperious, the mighty Imperial force jumped into the Bastien system to find no Chaos fleet awaiting them. Admiral Thok had clearly been delayed and fears of a space battle in the chaos system came to nothing. With the path ahead of them clear the first strike units of the invasion reached the planet just two days later.
On Bastien the Claws of Lorek, with their Anticross allies who had just managed to arrive before the Imperial fleet prepared to meet the 18th Army Group as it deployed some 500,000 troops in the initial assault. The could not know where the hammer would fall but confidence in their ability to thwart an Imperial invasion, which as yet had no support from Astartes forces, was high.
Veers had put Major General James Petraeus in overall command of the first strike and the choice of landing zone was made to favour his heavy armoured units. The first troop landers made planetfall without contest in the far north of Bastien's habitable zone, away from the frigid deserts of the planet's polar regions. Under the weak heat of the system's red dwarf star which coloured the sky a baleful red, Petraeus' armoured units moved south to the heavily fortified settlement known to the traitors as Heretic. Here the Claws of Lorek had spent some time building a set of fortresses facing the shores of the acidic ocean which dominates the planet's equatorial region. To their rear a set of "impenetrable" craggy hills would, so the forces of chaos thought, prevent Heretic ever being taken from the north. They were wrong.
Thanks to Imperial spies and months of careful groundwork, the Imperial commanders had found a way through the barren hills to the north of the chaos city, and combining air assault and armoured power, the city fell alarmingly quickly after a violent fight. With Heretic secure Petraeus immediately swung his armoured thrust west towards Vaden across the rolling savannah and deserts of northern Bastien. Taken almost completely by surprise at the shambolic fall of Heretic the newly arrived Anticross forces who were only now deploying along the Vaden-Heretic highway were utterly routed, leading to a total collapse of all other chaos forces in the northern plains. Much of the population loyal to the chaos forces now began a headlong retreat to the next large fortified city, while those who remained in towns and smaller cities along the Vaden highway now had to face the Inquisition, who had accompanied the invasion in force. By 1205.010M42 the Imperial battlegroup had landed a million men and were just fifty miles from their second objective.
While the second invasion wave prepared for planetfall scheduled for 1505.010M42, Lorek himself began organising his defences. The initial phase of the campaign had gone badly, but the forces of Chaos had yet to employ the greater part of their forces who were mostly concentrated around the capital, Bastien Primus, a city of one billion souls. For the population in the north, their new masters were no more forgiving than their old ones. In fact, in just one week, fully one third of the population in Heretic and in settlements on the northern plain were put to death for crimes of heresy, witchraft or mutancy, either by Inquisition death squads or by newly created and fanatical Imperial cults. In places anarchy reigned, with the Imperial agents merely arming the new "loyalist" forces in what was becoming a bitter civil war.
Saturday, May 08, 2010
Chess game around Bastien
Sunday, May 02, 2010
Thursday, April 22, 2010
Campaign begins: Landings on Sentinell
Wednesday, April 14, 2010
Shaidar Haran defeat the Tau
Monday, April 12, 2010
Battle of the Perseus Run

Shaidar Haran in the Deeps
Friday, April 09, 2010
Corellian Redeployment
Thursday, April 08, 2010
Thok's raid foiled by Beatty
Betor: Southern Breakout






