New keybinds have been added as quality of life changes in the Heroes III HotA + HD mod.
This list also includes classic Heroes III keybinds as well for completion.
Combat screen:
W = Wait
D or Space = Defend
C = Spellbook
R = Retreat
S = Surrender
G = Area attack (with gogs and liches)
Z = Show/Hide turn order bar
I = Show hero stats permanently
CTRL + mouse-over creature = See general movement
SHIFT + mouse-over creature = See exact movement (calculate obstacles)
Up/Down Arrow Keys – Scrolls combat messages
Q = Finish combat with Quick Combat
Adventure screen:
E = End turn
SHIFT + Left Click hero = Make clicked hero the active one
Hover over hero + SPACE = Revisit tile hero is at
Enter = Open hero/castle details
Hold ALT + mouse-over tile = See movement points required to reach tile
T = Next town
H = Next hero
M = Complete movement
H + M Spam = Cycle heroes and move them all
Z = Sleep hero, W = Wake hero
G = See den of thieves info
Q = See quest log
K = See kingdom overview
F5 = Toolbar (for enabling grid and other tools)
Castle/hero-trade screen:
CTRL + Click creature = Make 1 stacks, or remove 1 stacks
CTRL+SHIFT + Click creature = Fill empty slots with 1 stacks
ALT + Click creature = Merge all stacks into clicked creature
SHIFT + Click creature = Split creature into even stacks (you can do multiple clicks to divide the stack further)
CTRL+ALT + Click creature = Move clicked army to castle/other hero
SHIFT+ALT+CTRL + Click creature = Move all army except 1 of the clicked creature to castle/other hero
SHIFT+ALT + Click creature = Dismiss creature
Castle shortcuts:
Up/Down Arrow = Cycle to previous/next town
B = Open marketplace
Space = Switch heroes
F10 = Switch garrisons
Click castle icon (to the left of income icon) to see global buy menu
CTRL + Click castle icon (to the left of income icon) to instantly buy ALL available creatures
ALT + Click castle icon (to the left of income icon) to instantly buy ALL available creatures (Unupgraded)
CTRL + Click specific creature portrait to instantly buy the clicked creatures
ALT + Click specific creature portrait to instantly buy the clicked creatures (Unupgraded)
G = Open thieves guild info panel