Are you interested in Vikings? They raided and explored from the Middle East to Iceland. 
I dont know much about the,but my family blood line is supposed to have viking in it im told.
They were able to take most everywhere they went except Scotland. The word Viking actually means Pirate in Old English and Seafarer in Old Norse. 
I know one thing they would do is use a shield wall in battle to protect the front.
Shield wall
The formation of a shield wall ( or in Old English, in Old Norse) is a military tactic that was common in many cultures in the Pre-Early Modern warfare age. There were many slight variations of this tactic among these cultures, but in general, a shield wall was a "wall of shields" formed by soldiers standing in formation shoulder to shoulder, holding their shields so that they abut or overlap. Each soldier benefits from the protection of his neighbours' shields as well as his own
of a Danish king. A new runic alphabet was first used around the same time and Ribe, the oldest town of Denmark, was founded about AD 700.
History Viking and Middle Ages.
From the 8th to the 10th century the wider Scandinavian region was the source of Vikings. They colonised, raided, and traded in all parts of Europe. The Danish Vikings were most active in the eastern and southern British Isles and Western Europe. They conquered and settled parts of England (known as the Danelaw) under King