Bulgaria (1): The Oblique Order at Kran
In the city of Kran, nestled in the basin of the Hebrus River, one of Bulgaria's elite units, the Anakrion, was garrisoned. Leading them was Nestoric, hailed as the finest general in all Bulgaria.
"Any reports from the light cavalry?"
Nestoric's question prompted his adjutant to relay the latest intelligence without hesitation.
"They're still in pursuit of the enemy cavalry."
Bulgaria's forces had traditionally relied on cavalry as their mainstay. But after the Magyar raids decimated their horsemen, the Bulgarian army had no choice but to reorganize around infantry. This left them vulnerable to the relatively heavily armored East Roman cavalry—who wore no horse armor but outmatched the Bulgarians nonetheless. Still, with the light cavalry in relentless pursuit, the enemy riders would eventually be cornered.
"Those Abzonian bastards... I'll make them regret setting foot in Moesia."
The Bulgarians called their homeland Moesia. Across the river lay the East Romans, whom they derisively termed Abzonians. Centuries of conquest and liberation had forged an enmity between Bulgaria and East Rome as bitter as blood feud.
"My lord Boyar, the enemy's trailing infantry is approaching this position."
Nestoric nodded at the adjutant's report and issued his orders.
"Deploy the infantry in a horizontal line. Support them from behind with the cavalry!"
Anvil infantry backed by hammer cavalry. True to his reputation, Nestoric swiftly formed up for the classic hammer-and-anvil tactic.
He chose this formation for good reason: this was Bulgarian soil, giving his forces the edge in terrain and familiarity.
But that alone might not be enough.
The Bulgarians had already suffered heavy losses to enemy cavalry once before. To avoid even greater casualties that might force a strategic retreat, they needed a defensive posture to minimize damage. Yet supplies were scarce, and the Hebrus—their vital water source—had fallen into East Roman hands, ruling out a prolonged battle. For these reasons, Nestoric planned an aggressive push to drive the enemy back.
By the time the lines were set, purple banners emblazoned with eagle emblems began rising on poles.
The cursed eagle that stained ancestral lands with blood. Nestoric made no effort to hide his rage.
"Filthy oppressors! You've forgotten your emperor's defeat here and dare return without fear? I'll make you regret invading Moesia!"
"Get out, you Abzonian scum!"
"I'll cut your throats myself!"
Shouts erupted from the Anakrion ranks. Undeterred, the Romans deployed their lines as if focused solely on their own task.
Letting the enemy form up first would only increase casualties. Confirming his troops' morale was sufficiently roused, Nestoric ordered the infantry forward.
"Left, center, right—advance! Cavalry, advance ten paces, then strike the enemy's right flank!"
Nestoric's tactics were methodical. His well-drilled soldiers moved like clockwork, each fulfilling their role.
In response, the Roman infantry pushed ahead. Their sluggish movements struck Nestoric as odd.
"Abzonians usually move faster... Something's off."
Veteran of countless clashes with Rome, Nestoric knew their playbook well. This deployment deviated from standard Roman tactics. Moreover, their infantry was unnaturally concentrated on the left, turning what began as a straight line into an oblique angle.
"Oblique order...? Disaster! Retreat! Fall back!"
Sensing the trap, Nestoric barked the order. The Bulgarians were now just fifteen paces from the Romans, and their hammer cavalry was already wheeling to the rear. It was too late to disengage cleanly.
"Die, you pagan dogs!"
"In the name of God!"
The Roman left—packed with their main strength—slammed into the fight first thanks to the oblique formation. The evenly arrayed Bulgarians, anvil to their own hammer, crumbled swiftly under the hammer-and-anvil vise.
"Arrrgh!"
"T-take out those bastards first!"
"The Abzonian reserves are pouring in!"
Chaos engulfed the Bulgarians in moments. Left flank heavy, oblique deployment. Concentrated main force. Timed strikes. These were the hallmarks of the oblique order.
A basic Western tactic, yet timeless even in modern warfare.
Its essence: left, center, and right wings striking the same space at staggered intervals. Unlike Eastern spatial divisions like the fish-scale or crane-wing formations, it layered confusion over time, preventing the enemy from sustaining a coherent fight. To the foe, it felt like endless reinforcements surging forward.
With confusion as its core, the effect doubled against troops already rattled.
As the anvil infantry collapsed, the trailing cavalry hammer lost its anvil to strike.
"My lord! Anakrion First Unit is on the brink of annihilation!"
"Second Unit is in dire straits!"
Urgent reports flooded in. A lesser general might have panicked and ordered a rout, but Nestoric was cut from finer cloth. He instantly spotted the enemy's weakness and issued follow-up orders.
"Anakrion First holds the enemy's main left force at all costs. Meanwhile, the rear cavalry smashes their center!"
The oblique order hinged on timed attacks. By hurling cavalry at the center—the nerve of their sequential strikes—he aimed to sever their spine. But first, the left had to be pinned, even if it meant sacrificing First Unit to bog the battle in mud.
"Hu-raaah!"
"Die!"
The cavalry, obeying Nestoric, hammered the Roman center. This delayed their timed assaults, isolating the Roman left from the main body—a boon to the Bulgarians.
"My lord! Momentum is shifting back to us!"
"Good! If we hold...!"
But the enemy commander led from the front, refusing to let events unfold as Nestoric wished. Roman morale surged anew. The center somehow blunted the cavalry charge, tilting the tide against the Bulgarians once more.
The battlefield flipped like a coin. Nestoric realized prolongation would strain their meager supplies. With casualties still light, now was the time to withdraw and avert disaster.
"Infantry, consolidate in one mass and execute a tactical retreat. Cavalry, intercept the approaching enemy!"
Shifting from line to dense block, the Bulgarians gained cohesion. The Roman oblique could no longer stagger its strikes. Undaunted, the Roman general deployed cavalry to pick off stragglers. Yet Bulgarian horse circled the block, warding them off too deeply.
The half-day clash between Bulgarians and Romans ended. By raw losses, Bulgaria had the worse of it—but with minimal damage, it was effectively a draw.
* * *
"All that boasting."
Angelos's supply request. I clicked my tongue and scanned the dispatch he'd sent.
"Masterful oblique order on the enemy... but a wildcard intervened."
Reading his detailed account, I understood why Angelos hadn't inflicted crippling losses.
His oblique formation was textbook perfection—the sort that would rout any ordinary Bulgarian unit.
"The enemy commander's adaptability is absurd."
Spotting the oblique within fifteen paces, the foe took early hits but struck the weak center in retaliation. Panic would have doomed lesser troops, but their elite held formation, nearly turning the tables on Angelos momentarily. Thankfully, he led from the front to rally the center and foil the counter.
Hence the request: supplies might run low, so send more just in case.
"Basically, 'We almost had a total win—what a shame.' Pure brag sheet."
It was styled as a request, but brimmed with self-praise.
"More importantly... they held a dense formation, screened with cavalry for a tactical retreat."
This was enemy territory. Yet they'd gone aggressive, not defensive. And retreated despite light losses.
These two points nagged at me.
"Unless supplies are short, they wouldn't pull back..."
The realization hit. I shot to my feet and approached the Varangian sentries on night watch.
"What brings you out at this hour, Lord Rogerius?"
"Rouse the entire force. Arm up and assemble here—now."
"Suddenly, sir?"
"Yes. Immediately. And get the Pechenegs and Alans battle-ready too."
The sentry gaped, then dashed toward the camp.
"Short on supplies? They'll just take what they need."
Forage locally. Universal military truth. The Bulgarians would hit us following that very principle.