A bit about Boudicca:
Boudicca was queen of the Iceni people of Eastern England and led a major uprising against occupying Roman forces.
Boudicca was married to Prasutagus, ruler of the Iceni people of East Anglia. When the Romans conquered southern England in AD 43, they allowed Prasutagus to continue to rule. However, when Prasutagus died the Romans decided to rule the Iceni directly and confiscated the property of the leading tribesmen. They are also said to have stripped and flogged Boudicca and raped her daughters. These actions exacerbated widespread resentment at Roman rule.
In 60 or 61 AD, while the Roman governor Gaius Suetonius Paullinus was leading a campaign in North Wales, the Iceni rebelled. Members of other tribes joined them.
Boudicca's warriors successfully defeated the Roman Ninth Legion and destroyed the capital of Roman Britain, then at Colchester. They went on to destroy London and Verulamium (St Albans). Thousands were killed. Finally, Boudicca was defeated by a Roman army led by Paulinus. Many Britons were killed and Boudicca is thought to have poisoned herself to avoid capture. The site of the battle, and of Boudicca's death, are unknown.
The Celtic Warband - unstoppable when things go right, but vunerable to missle dire, trained troops, who can absorb the initial charge and then use better training and armour to wear down the opponent:
Second Warband:
The Warband Unleashed:
Some Celtic warriors fought naked, believing they were protected by the gods and showing contempt for their opponents - many were drugged and there are reports of Romans stabbing warriors to the hilt of their sword with no visible reaction:
Naked fanatics taunting the enemy:
The Celts had good cavalry that were often based around their Noble population (being able to afford a horse):
The Ancient Britons tended not to have armoured horsemen, but did use lighter armed, nimble cavalry:
Where the Ancient Britons did excel was in their use of chariots, the use of which greatly impressed Julius Ceasar:
It is likely that the Celts also used hunting dogs, whether they were present on the batlefield is problematic but they add some colour:
Light troops armed with slings were used to screen the main warbands and chariots:
All in all a fun army to use in WAB if not very effective. The later army from the time of the rebellion against Roman, that had contained auxillaries trained and armed as Romans does provide an army that can hold its own.