Ahriman
Tyrant
One thing to consider:
If you get into a midgame stalemate position where you have difficulty making much headway through frontal assault, then I strongly recommend a raiding pillage war to harass enemies and destroy their economies.
With Fremen, it is well worth beelining for the tech that gives you the raider unit while picking up ecology techs, and ignoring the other military tech lines for quite some time. You don't even need defense tactics. Then push up for Naib's Chosen, and you have a solid military for capturing cities long before your enemies do, then backfill techs or demand some in tribute with peace deals. But you can get a very long way while ignoring a lot of the military tech tree.
If you get into a midgame stalemate position where you have difficulty making much headway through frontal assault, then I strongly recommend a raiding pillage war to harass enemies and destroy their economies.
With Fremen, it is well worth beelining for the tech that gives you the raider unit while picking up ecology techs, and ignoring the other military tech lines for quite some time. You don't even need defense tactics. Then push up for Naib's Chosen, and you have a solid military for capturing cities long before your enemies do, then backfill techs or demand some in tribute with peace deals. But you can get a very long way while ignoring a lot of the military tech tree.