Originally Posted by
Paladin247
I've been using artillery in field battles for the whole time playing Rome II, DEI and Roma Surrectum II before that. I generally use three batteries of ballista with each legion. I've found the number of casualties they inflict depends most on the formations the enemy selects. For a lot of barbarians in long line abreast formations, very wide but not deep, I see 150-200 per battery. Hellenic dense phalanx formations just get torn to pieces by ballista firing incindiaries and now you're talking double those numbers or better. The most artillery casualties I've seen in a single battle in my current Roman campaign is about 1,200.
I've found a fair number of references to Roman use of artillery in field battles, second battle of Cremona being one. Two in Caesar's Commentaries, II, 8 and VIII, 14. Both refer to deployment of arty for potential use versus enemy troops, but in both cases the battle doesn't happen. Enemy retreats.
Another is in Osphrey's Roman Battle Tactics 109BC-AD 313, pg 22, plate B, Arrian's battle vs. the Alani, AD 132. There is a crescent of ten artillery batteries behind the infantry lines. However, in the accompanying write up no mention of the arty is made. I'm not prepared to say that's why we don't hear much about artillery; but maybe it was so commonplace that the assumption was made that artillery was mostly present and involved. How often was it mentioned that javelins were thrown even tho they undoubtedly were in every battle? In any case I found these in a casual index search of just the books in my personal library. From what I can deduce, most contemporary accounts of artillery (Biton, Philon, Heron, Ammainus, etc.) are largely theses on how to build same and their ballistic characteristics in range and throw weight.
Multiple sources say that every cohort had an onager from ~100BC-AD200 and that the nine legionaries detailed as artillery men could assemble same in twenty minutes or less. That for me solves the accessability issue. Anywhere the baggage train could get close to, the legion could have artillery support. You just combat-load the baggage train with the stuff you need first at the front.
Multiple sources also state that there's very little written on onagers at all, other than the theses as cited. So there's probably no real way to resolve this issue historically and I don't care. If the enemy has arty, they use it on me, so I'm going to do likewise.
Plus, listen, I spent thirty-one years on active duty in the real military, the US Navy. It just makes no sense to me that any leader would dismiss the use of a formidable weapon that could save his men's lives when he could do otherwise. I could care less whether it's "gamey" or not.
Real battle tactics are designed to place the enemy in as unfavorable a position as possible so you can stomp the daylights out of him while:
1. Achieving the mission
2. Maximizing enemy casualties
3. Minimizing own casualties.
Let's look at what a no artillery pre-battle speech might sound like.
"Men, you know me. I am a true Roman of the old school. I believe in virtue, valor and that Rome is destined to rule the world. I also believe in fair play on the battlefield; no gaming.
So today we are going to abandon our supremely effective three batteries of artillery support and allow our enemy to form up and engage not under fire so we may battle on a fairer level.
I think this will provide us with more of a challenge and thus be more fun."
Sure; I can see that.
Battles are not basketball games; no element of mutual fairness presides.