Best use - 90 influence as you gift them to city states (only works with sweden
) ..
Millitary offensive uses
- steal enemy roads during war time. (citadel) This can make unwinnable city assaults cakewalk (your siege units can move in setup and fire in the same turn. using former enemy roads - afeat only persia can pull off during golden age ,denmark attacking from water and incans to some degree over hills - without using roads) . Multiple ranged mounted units with logistic promotions (keshick, camel archer, horse archer, ) can fire 2 attacks at the city from the same road tile in the same turn and retreat out of range of retaliation (move , shoot twice, and move back, do the same with the next unit ... ) . Mounted/mechanized units can attack (multiple times with blitz) city/units near it and retreat out of range of city (retreat back to own teritory for march heal at the end of the turn - getting ready to do it again the next turn)
- steal enemy / neutral zone luxuries/strategic resources (again citadel/chain of citadels)
- provide attack and defensive combat strenght to units in "aura range' (15% regular generals // 30% china)
- provide extra heling behind enemy lines for march promoted troops reduce/eliminate the downtime for healing (only works with mongolia - their gg is also a uber medic)
Military defensive role
- drop a citadel at a chokepoint . Fortify a highly promoted military unit in it with a medic behind.. Watch the entire AI army melt trying to get trough it ...
- provide attack and defensive combat strenght to units in "aura range' (15% regular generals // 30% china)
and for all this versatility (unless playing sweden) you might still end up with more GGs than you need (especially in a Honor/domination game) so you might end up deleting a few of them just to save upkeep cost ..