Tarpit
In 40K terminology, a Tarpit is a big blob of expendable infantry intended to be a giant pain in the ass and functionally a living wall designed to slow enemies down and keep foes tied up. Ideally capable of being placed in cover, almost every faction in the the 41st Millenium is capable of fielding some unit or another that serves this purpose. Some are especially good at it, whilst others are simply mediocre at it.
Tarpit Units By Army
Below is a brief list of some classic Tarpit units favored by various factions in the 40K universe.
Imperial Guard:
- Conscript Platoon - 20+ Models for dirt cheap. Do the math.
Chaos Daemons:
- Nurglings - Gets into close-combat and keeps enemies tied up for half a game or longer.
Inquisition:
- Inducted Guardsman Squad - still not expensive.
Tau:
- Kroot Carnivores - Inexpensive infiltrating models at 7 points each. Hell of an area denial unit.
- Gue'vesa Auxillaries - Even less expensive and can't infiltrate but shooty and with decent wargear options.
Tyranids:
- Ripper Swarm - vulnerable to Instant Death and blast templates, but will tie foes up for round after round if they get close.
- Gaunts - Cheap and effective mass unit.
Orks
- Damn near any troops choice if fielded in sufficient numbers.