I played EVE Online for twelve years or so, fun in battles large and small. As mercenaries, we basically ran around executing contracts for folks willing to pay for control of star systems and/or system resources. The video below is a random example and told from our opponents comms' and perspective, involving about three hundred pilots total on both sides. Let's just say TeamSpeak was difficult to keep in order from time to time with that many folks on. Believe it or not this was one of the smaller engagements for system control we experienced.
Always outnumbered, many of our strategies focused on single decisive engagements to break the will of our opponents to fight. Before this battle, we were able to collect considerable intel on our adversaries and feigned weakness so they would commit all the remaining forces they had available to defend the system we were attacking. Once they put all chips on the table, we moved in two heavy groups from multiple directions on the entry wormhole (where the video link begins). Once convinced they could bring no other ships to the field, we destroyed the hostile logistics (guardians) and just started causing massive financial loss until they retreated.
They had a spy listening in on our comms' (par for the course in eve), so they did eventually call my ship on the field primary target (Max) hearing me directing the fleet and target calling. We were listening to them as well, so our logistics was ready to dedicate some ships to keep me alive.
It is doubtful we will see this many ships on the field in Star Citizen, but I do hope electronic warfare and other features will be in place to encourage strategic/tactical play and not just make it about who has more guns in a fight. We shall see!