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this is a WW2 version of the same turn/movement point based strategy in AoH2.
It's slightly more complex, as there are multiple kinds of air, ground and sea unit types that all have different stats, although on the whole the game centers around a rock-paper-scissors advantage mechanic (for example, artillery beats tanks, tanks beat mechanized, mechanized beats infantry, infantry beats artillery).
The scope is smaller, as you can only choose one theater of the war to play on at a time, and the game mainly focused on completing different missions for each nation (like taking Berlin as France, for instance), which in turn unlocks new missions and new nations, although you can keep playing on a certain scenario for as long as you'd like even after completing the objective.
Sandbox: Strategy and Tactics
https://play.google.com/store/apps/details?id=com.herocraft.game.free.stww2_sandbox