I got Lt. General and kept it for 3 weeks and then I couldn't keep up the grind required to maintain it, plus I was shipping out to Air Assault School with the Army so It was really fun while it lasted, I knew I couldn't keep it forever, I was just around the peak of my game play that I got it. If you ever do get it, you MUST milk as many commander hours as you can with it. I believe soulzz was one too back in the day,
it sucks because all the hackers ruin anyones chances of getting the rank now a days which is really stupid on EA's behalf.
There is another requirement however, you must have achieved BG within a short period of time to be eligible for promotion to a Corps command position, ( LT.Gen + Maj.Gen)