Complicated plans gave him indigestion. He hated complicated plans. Unfortunately, complicated plans were occasionally necessary. Careening headlong into a Mongol army was simply a bad idea. The scouts were too busy fighting for their lives to get close enough to the main body of the Mongols to get a good report on the total size. But spies and the reports he did have were enough to add to the indigestion.
Still, as the Emperor of the Romans, it was rather beneath his dignity to show indigestion. And it would unsettle the troops. Gambling everything on what were essentially giant ambushes was a bad idea. His predecessors would not approve. But years of planning had gone into these ambushes.
To conceal his unease, he pretended to study the model of the battlefield. The steep wooded hills that guarded the flanks were essentially unguarded, except for a handful of menavlatoi. They were the only troops he had that he really trusted to fight on foot in that terrain. He had considered archers, but did not want to give the Mongols any reason to push that direction. The more the Mongols imitated a mad bull, the easier this would work. The archers were deployed in lines, behind armored and shielded spearmen. Each tagma had carts of spare arrows spaced out behind them. The archers each had been provided with a supply of arrows and ‘mice’, the darts fired through arrow-guides out to extreme range. They wouldn’t kill an armored man, but they could wound horses and men when they found unarmored flesh. In between the blocks of infantry, there were batteries of catapults, loaded with incendiaries. There were also the carefully hoarded, hidden, and transported 'kannenoi', which he felt would probably have but little impact. Still, the Mongols were used to being the ones with these toys. He actually had higher hopes for the limited quantity of rockets which could be fired en masse.
In front of the line regiments were scattered loose lines of crossbowmen, with pavaises erected. In front of them were caltrops scattered, with small stakes marked with white rags marking range, and also the lanes for the light horse to retreat.
The light horsemen were basically bait. Turkomen and other archers, intended to let the Mongols know that he was willing to give battle. They were supposed to draw in the Mongols as best they could. It was going to be hard on the Turkomen, but that really didn’t bother him.
Behind the infantry, guarding the flank lanes between the hills and the lines, were heavy horse. Mostly Germans and Frenchmen, and the only thing they were there for was to countercharge any damn fool who got ideas about charging into his infantrymen. It wasn’t their favorite job, but he assured them that they would get a chance to fight this day.
But that alone would hardly be sufficient to win the day. Infantry could hold against a charge of horse, especially if disordered by archery. And there were sufficient archers to bleed the Mongol army badly should it get into a long distance shooting contest – he had more arrows, nearly as many archers, and his archers were equipped with equivalent bows and did not have the disadvantage of trying to sit a horse—which was a great unarmored target in this sort of fight. It was a chancy thing, and he was not going to rely on it.
But that wasn’t the end of the plan. There was a pass. An obvious pass, screened by only a few hundred Cuman. He hoped that the question of “how many horse did the Romans really have, and where were they” didn’t occur to Hugalu. But the obvious plan was to take that pass and use it to outflank the infantry and fall upon them from the rear. Screen the movement with horse archers, and send the nobles, the armored lancers, through the pass. Simple, obvious, easy . . . also the plan he truly hoped the Mongols would adopt. Hidden in a side of the valley was a canyon. Lined up in that canyon, were almost seven thousand lancers. Romans to a man, with a sprinkling of Latin kavallaroi. At the other end of the pass were the remaining Roman horse archers, ready to counterattack.
If the Mongols ignored the pass, they would be hit in the rear by this force. If they ignored the infantry and pushed everything into the pass, the infantry could redeploy to cover the pass in less time than it would take to fight the lancers to a standstill in the confines of the pass, where the maneuverability of the Mongols would be worthless, and where mace could be wielded to good effect.
But the evolution was complex. It relied on the initiative of good officers who knew the plan backwards and forwards and could execute it at the right timing. For this, there was a system of local men wearing no armor and carrying only a knife, wearing dull brown cloaks and mounted on fast brown horses. They had to suffice for eyes, ears, and voice. The fall-back plan involved a fortified camp, a river crossing, and a retreat to Caesarea’s fortifications. But Mongols were lethal in the pursuit. He was vaguely aware that in case of disaster, he would likely die. And that would put his six year old son in an untenable position.
So he had indigestion. And an Empire that had been shepherded for nearly 1,300 years depended on a plan that was just too damn complicated.