It would take a day just to get the troops lined up the way you imagine! Even if they could pull that off even the slightest miss step would wreak havoc.

Have you ever seen 100,000 people together? Look at how long it takes a major sports event to empty out and that's with exits dramatically larger than you are talking about! It can take hours to empty 100,000 people from a stadium which allows dozens of people abreast to exit at one time!

The number of Damane necessary to do all of what you suggest would drain the Empire of resources quickly given how many large armies they have floating around out there. Better by far to use small guerrilla-style forces that can quickly move on their own once they are inserted behind enemy lines. 5 Damane/sul'dam pairs with maybe 5,000 men per unit string them along the enemy flank to strike from unexpected directions.

Further problem they'll have is that while some Traveling is better than NO Traveling, their enemies have the linking ability and thus a much more efficient machine. 13 AS Linked can make a massive gateway and move huge numbers of troops in a fraction of the time as individual Damane could hope too. Not to mention how much less energy as a whole they will expend, meaning they'll have a whole lot more fresh Channeling forces at hand without significant lag time between "jumps".

I've said this over and over, YES the Damane will be able to move troops, but the lack of linking is a significant disadvantage to them. It's like you have a pistol and your enemy has a machine gun, sure the pistol is better than just a knife, but you're still pretty much out gunned.