Players may have a maximum of 4 of these units in play at the end of any given turn. These units must be converted/built in capitol territories, may be built as early as the first turn, and may be rebuilt if destroyed. The unit being converted may be an existing unit by paying 1 IPC, or newly purchased by paying the price of the infantry plus the conversion cost. Converting existing units does not count toward production limitations on minor factories. Converting existing units will not take effect until the place new units phase.
These units can be paired with other units such as Infantry, Bunkers, Mechanized Infantry, etc. to give that unit a +1 (D6), +2 (D12), or +3 (D20) bonus to attack, defense, or both.