The Roman army turns its attention to an island of rich resources, powerful tribes and druids, and advanced military equipment - Britain. This episode tells the story of the Celts' last stand against the Roman army - a revolt led by another great leader, the warrior queen Boudicca.

In the year 480 B.C., the Greeks and the Persians fight one of the most famous battles in history at a place called Thermopylae. Here, the mighty Persian war machine, which has conquered most of the known world, will attempt an expansion into Europe. The only thing standing in their way will be an army led by 300 Spartans, the greatest soldiers the world has ever known. They will fight to the very last man, and in doing so will protect the cradle of democracy during its infancy, and the battle will go down in history as the greatest military stand of all time.

During 1942, the Red Army moved from defeat to victory.

There are 200 million insects for each of us. They are the most successful animal group ever. Their key is an armoured covering that takes on almost any shape. Darwin's stag beetle fights in the tree tops with huge curved jaws. The camera flies with millions of monarch butterflies which migrate 2000 miles, navigating by the sun. Super slow motion shows a bombardier beetle firing boiling liquid at enemies through a rotating nozzle. A honey bee army stings a raiding bear into submission. Grass cutter ants march like a Roman army, harvesting grass they cannot actually eat. They cultivate a fungus that breaks the grass down for them. Their giant colony is the closest thing in nature to the complexity of a human city.

In the fall of 2016, an army of over 100,000 Iraqi soldiers and militiamen mobilize to liberate Mosul, Iraq's second largest city, from the clutches of the Islamic State. Ali Mula, an Iraqi journalist, joins this army of uneasy allies--including Sunnis, Shiites, Christians and Kurds--to find out if they can put aside their sectarian differences and finally free their country from the scourge of ISIS.
Along the way to Mosul, Ali encounters an unforgettable group of characters including a Sunni tribal leader who calls himself 'the Crocodile', a female militia leader avenging the death of her husband, a canny, Iranian-backed militia leader, a lawyer-turned-warrior, an elite band of ISIS killers, and refugees who survived the brutality of ISIS occupation. As he nears the end of his journey, Ali meets face-to-face with a die-hard ISIS prisoner who reveals the truth behind his nefarious organization.

After two weeks of chasing Vlad Dracula across Wallachia, Mehmed the Conqueror and his exhausted Ottoman army camp on the outskirts of Târgovişte. Their attack on the capital is imminent. But the man known to the Ottomans as the ‘Impaler Lord’ has turned the surrounding countryside into a chamber of horrors. Raiding during the night, sentries disappearing from the Ottoman camp, being taken outside and being murdered by Wallachian raiders. An exhausting day of marching followed by a night full of terrors, but yet still, Mehmed begins to close on his prey.
Mehmed prepares to strike a fatal blow to Vlad's army. A spy is found in Mehmed's camp. Vlad Dracula planned to kill Mehmed II in his tent in a very famous historical event called the ‘Night Attack.’ Vlad ambushed the Ottoman camp with his army in a surprise night attack. His plan was to confuse the Ottoman army by using their uniform so that they could not distinguish between the Turks and the people of Wallachia, but a surprise awaits.