Bishop Guglielmino degli Ubertini of Arezzo

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Bishop Guglielmino degli Ubertini of Arezzo

The military commander of the Ghibellines in this battle was
the city’s powerful bishop, Guglielmino degli Ubertini. Note two features
distinctive of ecclesiastical leaders who went to war in person: the crest on
his helm fashioned as a bishop’s mitre, and his use of a mace (mazza ferrata)
rather than a sword. The latter was a cynical ploy adopted to get around the
religious prohibition on churchmen `shedding blood’: they could kill enemies,
but only `sine effusione sanguinis’. The second half of the 13th century saw
the development of plate armour elements worn in combination with the mail
hauberk. Initially plate armour was mostly made of cuir bouilli (boiled,
moulded and hardened leather); here, this material is used for the domed
defences mounted on quilted cuisses at the knees, at the shoulders above
leather strips, and for the gauntlet cuffs, but the greaves on the lower legs
are already in metal. The mail hood worn under the helm was now a separate
camail. Over the hauberk the bishop wears a `coat-of-plates’, called in Italian
a lameria; buckled on at the back, this is a tabard-shaped garment made of
small iron plates riveted between two layers of thick fabric in such a way as
to allow some flexibility of the torso. Apparently, these lamerie were first
introduced in Italy on a large scale by the German mercenary knights employed
by Manfred of Swabia.

At a first glance, Guglielmino degli Ubertini would appear
to fit the stereotypical worldly clergyman of literature. While there is no
doubt that he often practised power mongering to a high degree in his more than
40 years as bishop of Arezzo (1248-89), switching his allegiance at will from
Guelph to Ghibelline, he always had in mind the interests of his city and his
diocese – at least when he saw them coinciding with his own and those of his
family. A man of the sword as much as of the pen, at the battle of Montaperti
in 1260 Ubertini led the exiled Aretine Ghibellines against the Guelph
coalition besieging Siena `capturing and killing many’. On a number of
occasions he did not hesitate to use the weapon of ecclesiastical censure
against his fellow citizens to obtain his political goals. As a military leader
he would show his limits during the 1289 campaign, when concerns over his own
possessions in the Casentino area led him to seek battle at all costs, despite
being advised otherwise. At Campaldino he demonstrated his attachment to his
native city, not hesitating to join the fray even when given the chance to
escape from the slaughter.

Guglielmo Ubertini who had served for forty years as the
bishop of Arezzo by the time of the battle. “A man of the sword as much as
of the pen”, Ubertini had proven to be capable, ruthless and brave
military commander during several conflicts before 1289, though his strategic
acumen was impeded by his interest in defending the possessions of his family
at any cost. This greatly influenced his decision to seek battle at Campaldino,
despite having been advised against it.

BATTLE OF CAMPALDINO, 1289

A Tuscan Guelf League army, mainly composed of Florentines,
faced a Ghibelline League force from Arezzo in the Amo valley. The Florentine
army appeared to be on the march for Arezzo along the well-worn road of the
Upper Valdarno, when all at once they swung to the left and crossed the Consuma
Pass without encountering any opposition, and entered the Casentino-the highest
valley of the river Arno. From there they descended towards Arezzo.

At first the local forces fell back before them, but they
eventually called a halt in the wide valley immediately north of Poppi after being
reinforced by the Ghibellines of the Romagna and the Marche.

The Tuscans, consisting of 1,600 cavalry and 10,000 infantry
(including a large number of crossbowmen), drew up with cavalry in the centre
and the bulk of their infantry formed up on both flanks slightly in advance of
the cavalry, thus constituting the horns of a crescent formation. The centre
was covered by a detached screen of light cavalry. Behind the whole array a
line of wagons was drawn up, behind which was positioned a reserve of 200
cavalry plus some infantry. (The poet Dante fought in the front rank of the
Florentine cavalry.)

The Ghibellines formed up in 4 lines with their 800 cavalry divided
between the first, second and last lines while their 8,000infantry, with a few
crossbows among them, made up the third. They opened the battle with a charge
which, although it routed the Florentine light cavalry and drove the Tuscans
back to their baggage wagons, committed their first three lines, the flanks of
which were then subjected to a devastating crossfire from the crossbowmen on
the Tuscan wings while the rest of the infantry, armed with long spears, closed
in around them. The Ghibelline reserve line of just 50 horsemen was never
committed and eventually fled, at which the Tuscan reserve came in on the rear
of their disorganised first lines, which were thus trapped. Ghibelline
casualties totalled 1,700 killed and 2,000 captured.

Throughout most of this period archers were present on the
battlefield in relatively small numbers. They and crossbowmen were usually
positioned on the flanks of the army in separate units with spearmen in the
centre, though they are also to be found skirmishing ahead of the main body, or
else interspersed with other infantry. Archers on the left of the line, firing
into the enemy’s unshielded flank, would have been particularly effective, and
with archers on both flanks it was possible to achieve a crossfire, as did the
Tuscan crossbowmen at Campaldino in 1289.

Suggested reading:
General Works: Villaripi, I primi due secoli della storia di Firenze, Florence,
1910, Davidsohn: Geschichte ion Florenz, Vol. IL Firenze. On the Campaign:
Koehler, G., Die Entwickelung des Kriegswesens und der Kriegfuhrung in der
Ritterzeit, Book III, Breslau, 1889. On the Battle: Fieri, P., ‘Alcune
quistioni sepra la fanteria in Italia nel periodo comunale’, in Rivista Storica
Italiana, 1934.

By MSW
Forschungsmitarbeiter Mitch Williamson is a technical writer with an interest in military and naval affairs. He has published articles in Cross & Cockade International and Wartime magazines. He was research associate for the Bio-history Cross in the Sky, a book about Charles ‘Moth’ Eaton’s career, in collaboration with the flier’s son, Dr Charles S. Eaton. He also assisted in picture research for John Burton’s Fortnight of Infamy. Mitch is now publishing on the WWW various specialist websites combined with custom website design work. He enjoys working and supporting his local C3 Church. “Curate and Compile“
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