Centurion Position in Battle

[Vindex]

If we look to cavalry camps, the cavalrists and their horses lived in mixed barrack. One side of the barrack was a stable for 3 horses and the other side rooms for 3 soldiers, iirc. But we did not find this type of barracks in a legions camp so far. Even if they are easy to identify, because the ground of a stable is contaminated.

Recent discussion raised the possibility of a second floor, the men sleeping right above the animals.

Without going off topic too much, there was a "news" story from English Heritage about this within the last fortnight. I am always surprised that it seems such an outlandish idea since the British cavalry were still doing this in 19th Century (TIdworth Barracks IIRC).