Battle of Teutoburg Forest

sometime in september in the year Circa September 11, 9, the Battle of the Teutoburg forest ended. An excerpt from the article:

"At the Battle of Teutoburg Forest (aka Battle of Varus), c. 9 CE, a combined force of Germans annihilated a Roman army consisting of three legions including three squadrons of cavalry and six cohorts of auxiliary troops. As some soldiers must have been left behind to defend summer camps, the army probably held 10,000 to 15,000 men or roughly 8 to10 % of the total Roman army. The sources do not mention the size of the German army at the famous battle. Based on the size of the catchment area, and the fact that Arminius, leader of the German forces, was not able to recruit all chieftains, it is likely that the Germans were heavily outnumbered, perhaps 1:2.

Seven years after the battle, the Romans sent Germanicus to revenge their fallen comrades by devastating the countryside. Nevertheless, the battle had a decisive impact in the long run; the Romans never consolidated the hold of Germania Interior, the land east of the Rhine. Instead, the Roman frontier (limes) along the Rhine was consolidated. Later, after the 16th century CE, the battle fed the imagination of countless military commanders and their belief in what a decisive battle might ensure in terms of glory and political gains."