ERA memes were made about the Ukrainian army putting ERA on seemingly everything following the military's acquisition of German-made Leopard 2 tanks from Poland. The memes spread to /pol/ and Reddit's /r/NonCredibleDefense sub where ERA bricks were used as an exploitable, edited onto image macros and meme templates along with two soldier-coded Flork of Cows characters unnecessarily putting ERA bricks on any object. ERA was also called "Cope Bricks" in reference to Copium and Cope Cages.