Gallic influence on Gallic War era Legions

[Theodosius the Great]

I have both Roman Military clothing 1 and From Ceasar to Trajan, and from these two books buying them for the information at Ceasar period but the material is very scarce and really nothing helpful.

I recommend you read "Rome's Enemies : Gallic and British Celts". There's a lot of archaeological information in that issue.But the most useful, single book you can get your hands on is "Roman Military Equipment" by Bishop and Coulston, 2nd Edition.

Good luck.

~Theo