Basic kit for 5th century infantry?

[panairjdde]

I have started studing the tunic. I found the informations on comitatus' page (it is very useful) and I am checking some pictures about Coptic textiles.

One thing I am not sure I understood is the width of the tunic. I have been reading that for military male tunics the tunic body is as wide as the elbows. I mean, if the tunic is a capital 'T', the vertical stroke should go from elbow to elbow, with the horizontal stroke extending from the elbows to the hands, right? However it looks like very wide, with the sleeves starting at the elbows, quite uncomfortable, I think. Furthermore, in most pictures, such as the standard-bearer and the unarmoured infantryman at [urll1ylahm]http://www.comitatus.net/trooptypes.htm[/url], the sleeves seem to start closer to the armpits. Am I wrong?

Best regards.