Units

WW2 Sandbox uses classical, WW2-inspired units, albeit with a Soviet bias.

Every unit class has 5 sprite variants. An Allied variant (For Allied countries in Europe and their possessions in Asia), an Axis variant (For Axis countries in Europe), a Comintern variant (USSR, Mongolia, Yugoslavia), a CUF variant (Republic of China, Communist Party of China), and a GEACPS variant (Japan, Manchukuo, Mengchukuo).

Neutral countries in Europe use the Allied Variant (except Austria which uses the Axis), while in Asia they use the CUF Variant.

Each one of the variants has its typical color code that affects unit color, and, to a lesser extent, province color.

Allies: Khaki Brown

Axis: Ghost Grey

Comintern: Dark Green

CUF: Bronze

GEACPS: Gold

Ground Units
The unit formation is fairly simple:

For all except Armored, 1 division is a Division, 2-6 is a Corps and 7-12 is an Army

For Armored, 1 division is a Brigade, 2-6 is a Division, 7-11 is a Corps, and 12 is an Army.

(The sprite is considered based on the number and type of units in your formation. Both a formation of 6 Infantry + 1 Motorized Infantry and a 7 Infantry formation will receive the Infantry Army sprite, because the number has been reached, and the majority is Infantry.)

(Order of priority, in case of division number equality is Infantry<Elite Infantry<Motorized<Artillery<Armored)

Infantry Division/Corps/Army:
The workhorse of your military, these divisions are cheap and reliable.

Elite Infantry Division/Corps/Army:
An upgraded version of the regular infantry divisions, but at a higher price.

Motorized Infantry Division/Corps/Army:
A highly mobile division with endless tactical potential. Deadly in the hands of a capable commander.

Artillery Division/Corps/Army:
Highly specialized to fulfill anti-tank roles, but useless even against regular infantry.

Armored Brigade/Division/Corps/Army:
Expensive but highly powerful and mobile unit, with a great tactical potential.

Fighter Wing:
Invaluable unit capable both of obtaining air superiority and sabotaging enemy units.

Bomber Wing:
Highly capable of inflicting raw damage to ground or sea units, but vulnerable against interceptors.

Submarine Fleet:
Cheap and powerful in anti-ship operations. Also boasts a high anti-air resistance.

Only unit that cannot engage in shore bombing. This can be alleviated by getting them to Level 5 tech

Destroyer Fleet:
Cheap naval unit useful for different purposes.

Cruiser Fleet:
Impressive anti-air capabilities and good battle and shore bombardment stats though expensive.

Battleship Fleet:
Prohibitively expensive unit that is an ace in bombarding land units left willy-nilly.