|Values:||Boolean values: yes or no, true or false, 1 or 0|
999 is practical.
-1 won't give it infinite ammo. The game appears to take the absolute value (positive -> positive, negative -> positive) for armories.
If an armory has, it will still function even in a low-power situation.
If an armory is placed offline via an in-game mechanism (like in Tiberian Sun), it will not function.
In Red Alert 2, multiple soldiers can be selected at once and ordered into the armory; forming a queue line similar to the way multiple units enter a transport when ordered simultaneously. This makes promoting your soldiers a much less arduous task than it was in Tiberian Sun, where each soldier would have to be ordered into the armory separately.
Conyard Armory: Just Don't
Armory=yes to a construction yard ( ) causes glitchy behavior. When sending an infantry unit in to be promoted, the building will cycle through its image frames rapidly and the unit will never come back out.
Blocked Armory (RA2)
When an infantry unit enters an Armory it disappears and reappears a short time later in the upper left corner of the building. Unfortunately, the unit does not move away from the building when it exits. The unit is partially obscured by the building and can be difficult to mouse-over the correct part of the screen in order to click to select the unit and move it away manually. Units that have just exited the building will also block other units from being ordered to enter until the offending unit is moved away. However if units are already queuing for the building (see above) then the next unit in the queue will enter automatically as soon as the unit ahead of it is moved out of the way).
Partial Fix Accompanied by Cloning Bug (RA2)
By making the Armory a barracks (BuildingTypes you have with set to spawn a copy of the newly-promoted unit (not promoted of course) as if you had just trained it.) you are able to set a rally point in order to avoid the above problem, however doing so will cause any
Screwy AI with Armory Barracks (TS)
If a barracks that the AI builds is given Armory=yes, it somehow screws up the AI by causing them to choose one type of infantry that they can train and mass produce it (non-stop).
Armory Barracks Jackpot IE of Death (TS)
Not only is the aforementioned AI bug a concern, but using a combination armory barracks has other complications as well — dire complications. If a player attempts to train infantry while promoting on the same building, there is a rare chance that both soldiers will try to exit the building at the same moment. This causes an IE (debug code needed).
Glitchy Ammo Logic
If the Armory has a weapon, both promoting infantry AND each firing of the weapon will decrease the Ammo counter. Once the counter is zero, the Armory will no longer fire OR promote infantry as the Armory tag prevents Ammo from reloading.