https://store.steampowered.com/app/1882140/Decisive_Campaigns_Ardennes_Offensive/

One of the best wargames I've played - very unique take on the genre.

>overall scale is almost tactical with how small the units and hexes are
>4 combat phases per day - morning, noon, afternoon, night
>units recover readiness and fatigue a lot faster when not moving at night, so there's an incentive to hunker down as opposed to going full throttle
>each hex has its own terrain type AND height, so taking the high ground is rewarding but difficult
>recon is VERY important, ambushes can maul units if you don't invest in reconnoitering your advance path
>each side has asymmetric strengths and weaknesses
>ex: for germans, clear weather means a lot better visibility so recon (and thus advancing) is easier - but this means american planes can assrape you
>advancing is held up organically by lack of recon and road network limitations (along with the standard logistical issues of supplies and fuel) so you can't shove a full division through a shitty logging road and expect full performance
>zoc is estimated, your "border" will expand over enemy units if you don't have enough recon, meaning "safe" hexes can have enemy units inside that will fuck you and your supply lines, only way to be sure is extensive recon or physical control
>each side gets reinforcements every few turns so there's always pressure