March 'em 3 abreast in rows a meter apart and the line will only be 333km long. do it continuously for 67 hours and you'll get a million through there... assuming everything goes perfectly, no one breaks stride or has to go to the potty.One look at a freeway at rush hour will tell you this is not going to go well.
With luck they'll get maybe 9 soldiers tops on a planet before they get wiped out

Could you beam them through an Iconian gateway?
I thought about that idea too, but it's just way impracticable to be realistic.
First, imagine how many ships you would have to bring in that area just to attempt it. The fighter only holds about 42 crew members and no stats on the bigger ship, but a good guest would be what... 2,000 or so.
On trying to transport them through the gateway-- wouldn't that be like beaming into an separate, active transporter beam that's already beaming somewhere on it's own?
There would be some type of interference or incompatibilities--too dangerous I think.