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How to select units to play in great big war game
Select the barracks.
Infantry units are the soldiers and personnel units in the game. They are made in the barracks.

Pick from: +Tap on the barracks to see what units are available. Not all units are available at all times. +The barracks are located in the front of the game screen in the top left hand corner. Each unit is 60 feet (12 meters) by 15 feet (3 meters). +The army units on the game will have their units located in locations other than in the barracks. Wait for the unit selection to finish. +In battlefield 5, the units are found in the barracks. Units you just see shuffling about are not the ones you want.
Answer:
Tap on the barracks to see what units are available. Not all units are available at all times.