Press [Left/Right arrows] or [A]/[D] to scroll the field.
Press [Z] or [C] keys to fast scroll to the left or right edge of battlefield.
Press [Up/Down arrows] or [W]/[S] to control the arrow sign (only for manual troops appear).
Press [P] to pause the game.
Click units to train or use [1..9] hotkeys.

Read in game instructions.