Better Angels starts up with the Walker invasion that took place during Season 2 of The Walking Dead. The tactics of Rick and Shane are notably similar when defending Carl from the Walkers.
Downfall has this tactic both played straight and inverted. The Exequia Troops of Unohana's army are mindless drones that employ this tactic occasionally as skirmishers. They are repeatedly shown to pose occasional difficulty to even Lieutenant-strength opponents due to their sheer tenacity. They make no sound—not even when they're hurt or killed—and will keep coming until they're dealt a fatal injury.
In Enemy Of My Enemy, the Brutes try a version of this, charging in a solid wave of fur and fury against a wall of Jackal-shield-wielding Elites, in a scene reminiscent of soccer hooligans rushing a fence. In this case, the fence pushes back and holds firm, while the Elites' human allies fire down on the Brutes. It's stated that the Brutes were so tightly packed, dozens were dead on their feet because there was no room to fall to the ground once they were killed.
Which is, unfortunately, Truth in writing, as many examples of people dying in tightly packed areas do feature corpses that are only revealed to be such when the place starts thinning out, causing them to fall down due to no longer being supported by the people around them.
Discussed between Atvar and and Kirel before the invasion of Earth in Worldwar: War of Equals. The Conquest Fleet consist of 35,000,000 infantrymales and note that no Human military can match them in those numbers. This tactic actually works in some of the small countries of Earth, helps dominate the skies, and gives superpower nations such as America and China a run for their money.