Well, I already post question on more sci-fi focused forums/live chat, though I want some input from a more military oriented forums like here as well.
By hordes, I mean the space bug or swarms of creatures with little individual intelligent, but make up by huge number and controlled by a mastermind. Think of Starship Troopers (the bugs), Starcraft (zerg) or Warhammer 40k (tyrannide), aliens (xenomorphs) or anything alike (no zombies). Generally speaking, these creatures are stronger than most known animals on earth, their number make it difficult, though they are not hard to be destroyed. They also have some armored and flying types here and there.
If earth gets attack, I gear toward autocannon, because they are great to fight numerous light target, then something to fight armored/airborn targets like missiles or more powerful cannon. Therefore, platform with autocannon and missile combined platform (2S6 Tunguska, ADATS FAAD, LAV-AD system) and tank with coaxial autocannon (AMX-30, T-72M Moderna) are my choices.
Which real life combat platform would you pick to fight them?