20mm Cannon

20MM Cannon (aka 20mms) are unlocked via the Munitions Plant.

Main use
20mm's are very effective at draining the enemy's resources and damaging their defenses. 20mm's have quite high spread (unless combined with Scattershot's active ability) which means they aren't very effective at punching through enemy defenses.

20mm's are a later game weapon due to them needing the Workshop or Armoury firstly before making the Munitions Plant.

They can't be defended using any AA. However they can be reflected with shields. Although if the bullet doesnt hit the shield itself, the splash damage will damage the shield, often destroying it after a few hits.

The best defence against 20mm's is sandbags, since they absorb the damage without high repair costs. 20mm's have one huge weakness, which is their long firing time. It leaves them very vulnerable to snipers and flaks.

Trivia
 * The cannon resembles the Oerlikon 20mm with a vented barrel and a Pak 40 muzzle.
 * The bullets tips in game are blue, which means they are dummy round.