I got another question : How does their Ambush and First Strike perform compared to British Commandos? Worse, even or better?
Its the same bonus values.
Pretty much all AI ambush bonuses are the same, 50% dmg for 5 seconds.
That is inaccurate. JLI and Commandos get different bonuses for first strike and have different camo than ostheer camo that also get sprint in package, while some unit get no bonuses when firing from cover (AT infantry/weapons also.)
Commandos
Veterancy 2 grants +35% speed during ambush for 3.25 seconds; Veterancy 0 sprint Ambush bonus removed.
(they do get x1.50 accuracy at vet 0)
Since the 2 unis have different optimum ranges it is difficult to compare. JLI want to use their bonus a long to mid range while commandos want to use their bonus close range and chase the enemy on retreat.