USF
LT:
start with 1 Thompson/4 carbines can now upgrade with 2 more after weapon rack unlocked, takes all weapon slots.
Vet 1 ability "on me" (ability can scale with veterancy)
Reasons:
Solidifies LT as an offensive AI unit.
Captain:
Start with 5 Garrands, can now upgrade with an LMG take all weapons slot, can no longer supervise
, has access to frag grenade and AT grenade
Vet 1, "mortar barrage" calls in a mortar barrage (ability can scale with veterancy)
Reasons:
Solidifies Captain as defensive oriented unit with utility
Major:
Now has 1 entity can be upgrade to increase entity to 3, start with pistol if upgrade 1 carbines.
Reckon flight replaced by use binoculars providing "focus sight" as vet 1 ability.
Smoke grenade removed can now supervise.
Reason:
Major become utility oriented while allowing player to use him both in base and out of it with low Pop.
Reckon plane removed since this option should not be available stock.
For all officer, i suggest a reduce version of para/ranger carbine for the whole squad, it will be both consistency and historical accuracy.
About the smoke laucher, i agree on share CD with nade, but also want to see them available on LT and CPT nontech, in exchange for removing it from echelon, thus make officer more unique. And CPT should also have frag nade available with normal tech since he is still a combat squad. Another option is LT and CPT can have AT nade at vet 0 but.
For LT, he can still use a 2x Thompsons upgrade but also can pick between it and a 1× bazooka upgrade nontech (tech still needed if want to double up). Thompson obviously will come with "on me" and zok can come with something like vehicle detection.
For CPT, i suggest a 4 man squad. Upgrades include a nontech 1x BAR upgrade (can still double up with tech), since cpt is authorized with the company reverse weapons pool of BAR this will be historical reference and also dont require making a m1919 stock. The Bar upgrade add the 5th rifleman and can open a time suppression vet ability, of med kit of something utility if suppress is too strong. Further more, he can chose between the Bar and a "radio man" upgrade which add a pathfinder model and unlock a smoke and a light artillery barrage of mortar or pack howitzer.
For the major, reduced pop and move supervise to him is good but i will stat neft the recon by remove the second plane at vet rather than outright remove it. If further neft is required, it can be adjust that the plane delay longer before come, slower and easier to be shoot down, of make it work like UK command vehicle plane, fly around the major for a short time.