This is a scale mddel of a fortified camp made using sharpened stakes in the Hellenistic manner, of the type also used by Republican Roman armies on the march, another set based on the "HOPPIDUS" modular system for ancient fortifications and designed specifically for DBA. This set contains a selection of all the modules you need to recreate these temporary fortifications.
The complete set as shown consist of a base formed by two low embankment corners which leave a full module frontage (40mm) gap, four sections of stakes, a gate made of timber latched together to close the gap itself and two lateral supports for the gate.
They can be used for all ancient armies based on the Hellenistic model, such as Greek, Macedonian, Syracusan, Pyrrhic, Carthaginians, Republican and earlier Romans, Italians and many others.