Not sure if this tactic already exists, because I have not seen anybody do it before.
Use the Burton LMR Trench for the support class and use the incendiary firing mode to take down that giant balloon. Be sure to equip a ammo crate so you don't run out of ammo.
This tactic was inspired by real life events, as incendiary rounds were developed to take down Zeppelins. Figured I should try it in BF1, and what do you know? It works!