Buying of units in the Barracks is the main way of obtaining units. A player can buy in the Barracks different numbers of not trained units. Buying happens instantly.
There are two restrictions on the access to buying of some types of units. The first restriction - player’s rank. Each new rank gives an access to new types of units. The second restriction is the following. If units of some type are added to a player’s army, their buying is disabled. For taking this disability away a player should remove units of some type from his/her army.
Buying of units happens in the following way. A player chooses any unit available for buying, sees all their parameters and features of tactics. If the price satisfies a player he/she can enter the number of units for buying and confirm his/her purchase. Units become instantly available for a player.
If a player has already units of such type their number is summed up. If previously bought units or new units are trained their parameters become proportional while joining together (see section "Units Training").