All players with their names and units are displayed on the left and right side. If a unit dies, it will be greyed out. Definitely recommended to be clear right from the start what the balance of the match looks like and which units can be dangerous for yourself.

Pro tip to start: If you play against bots and see that a bot has only a single unit with maybe 1-10 individual troops, then don't kill them, just let them live. The bot needs half an eternity until it refreshes, attacks or reports itself. This allows you to fight outnumbered for a certain amount of time.