Expendable: Witnessing friendly expendable units rout does not reduce other units' leadership, unless they are themselves expendable.
Hide (forest): This unit can hide in forests until enemy units get too close.
Skavenslave Slingers is a Skaven missile infantry unit in Total War: Warhammer II. From a position of relative safety, slings enable them to watch their peers march to their doom.
The Under-Empire is run by slave labour. Skavenslaves perform all menial tasks, including mining, tunnelling, and food production. In lean times, they themselves become the food. The majority of slaves are Skaven born into bondage, the lowest class of a hierarchical society. Their ranks swell as rival clans are captured during internecine wars. At times even non-Skaven become slaves, although few other races last long under the whips of the ratmen overseers. In warfare Skavenslaves are used en masse to absorb missile fire and to overwhelm the foe with numbers. A common Warlord tactic is to whip Skavenslaves to the fore of an assault. Many are butchered, but the loss is acceptable if the slaves bear the brunt of incoming or tire the foe for the next attack wave. The best Skavenslaves will even pull down and tear to pieces a few of the adversaries, although this is considered a bonus.
↑Expendable: This unit is comparably cheap to recruit, maintain and replenish.
↑Meat Shield: While unimpressive at causing damage, this unit is useful as a 'meat shield', absorbing damage that would otherwise hurt a more useful or precious target.
↓Poor Leadership: This unit suffers from poor leadership and will easily rout. Keep its flanks secure and your Lord or other encouraging units nearby.
"Better than nothing" is the most fitting description for Skavenslave Slingers. Their leadership, damage and range are very low and they have no armor, so they will die and/or start routing the moment an enemy unit so much as looks at them funny. The only upside to them is that they are dirt cheap in terms of upkeep and can fill out army slots if nothing else is available, but don´t expect them to do any significant damage to anything that is armored or shielded.