The invaders had brought along massive artillery, so General Tobromeros, knowing that our troops were not a match for theirs neither in quantity nor quality, decided to focus the defense on the main square, where ultimately both armies, the Crusaders and the Venetians, would eventually try to link up.
Both enemy armies had about a thousand heavy cavalry they call knights. With heavy chainmail and lifelong training and experience these were the most fundamental arm of their army, but not the only one. For each of these armies also comprised of 6 regiments of professional foot soldiers, 1000 to 1500 strong each, called seargents, clad also in heavy mail, with big kite shaped shields, spears and even axes. They were superior to our skutatoi regiments, who were neither clad in chainmail nor were that proficient in warfare as a whole. Even our two swordarmed spatatoi infantry were no match in a one-on-one engagement.
Moreover the Latins also brought with them more lightly armored swordsmen and each army had 3 or 4 regiments of crossbowmen who were not only able to shoot missles capable of penetrating even the strongest armor but were also proficient in hand-to-hand fighting.
In a war council earlier on, Tobromeros and Sven Svenson, the leader of our 1000 men Varangian Guard, had agreed to line up all our troops at the main square, defending each of the four entrances. The main approaches were the Via Justiniana in the north, the main line of advance for Baldwin's army, and Via Nicephorusa in the south, where the attack of Dandolo would be heaviest.
Achilos turned to page two.
This sketch was made from one of the towers of the Hagia Sophia. On the left you can see the northern Via Justiniana, guarded by the 3rd and 5th Infantry Brigades, both speararmed units, supported by catapult batteries CB 1 and 3.
To the right you have the southern approach, Via Nicephorusa, guarded by 1st and 2nd HG Brigades 'Homeguards' who were made up of civilians. They did not have any armor, but Tobromeros was sure that they would stand up to the enemy due to the pikes they were wielding, though most of the captains, including the Homeguard brigade commanders, didn't share his opinion. You can see CB 2, another catapult battery, being in support. The other approaches, here at the top and the bottom of the sketch, were guarded by 6th and 9th Infantry Brigades. 102nd and 103rd Brigades, spathatoi sword infantry, were in reserve, along with the Varangian Guard, 3rd and 4th Light Infantry, armed with javelins, 4th and 5th Auxilia Infantry, archers, and 1st Hippotoxotai, a horsearcher brigade.
The bombardmend of the walls started half an hour after sunrise. Catapults and Trebuchets penetrated our walls within the hour. However there was a mismatch in the Latins' plans as Baldwin's army started the assault much earlier than the southern army under Bandolo. From what we know, we assume that Baldwin was trying to outpace Bandolo, wanting to claim Constantinople all for himself before Bandolo's troops had even pierced the walls. One of the artists had positioned himself on the second floor of an inn, looking out across Via Justiniana. This is one of his paintings.
This is Baldwin I. racing ahead of his troops. He was obviously persuaded that we had scattered and were looking for refuge amongst the civilans when he had passed the undefended wall breaches. He was utterly suprised when, bursting out of Via Justiniana, he and his personal retinue ran into the two Infantry brigades awaiting him. Still he fought, perhaps to give his slowmoving infantry time to come up. Though outnumbered he and his so-called knights succeded in this, though for a high price, which some Anna Miranudus, who was in one of the mansions situated on main square, chronicled in her work.
At the bottom of this sketch you can discern Baldwin, going down, hit be Greek Fire, burning alive. However, here, to the right, you can see the first of the Latin regiments engaging 5th Infantry. The battle for the center of orthodox Christianity was on.
More and more of Balwin's regiments joined the battle against 5th Infantry while 3rd Infantry was struggling against the ongoing onslaught of Baldwin's personal guard. On the oil painting on the next page...
...you can see one of CB 1's salvos of Greek Fire landing amidst the enemy infantry while on the right Baldwin's guard, seemingly unimpressed by their leaders death, continued pushing back 3rd Infantry.