Agricola\'s Army in Scotland and Mons Graupius questions?

[sulla felix]

Point 4 of your questions - I think I am correct in saying that Tacitus tells us that only the Batavi and Tungri Auxilliary troops were required in the battle (the legionaries were doing their washing and other important stuff!). As to the "status" of those legionaries I think that the Batavian Cohorts were granted Roman citizenship en masse by Trajan after the Dacian campaigns. It may have been unlikely therefore that many of the casualties were Roman citizens, but I stand to be corrected on this?

More on the history and status of the Batavian Cohorts here

Also check out Agricola and the Conquest of the North by W.S. Hanson - may be a bit outdated but still some very useful background information etc.