Analysis of information sources in references of the Wikipedia article "Labor camp" in English language version.
A second early modern form of punishment, the galleys, constituted a more direct precedent to the earliest hard labour camps. [...] Galley rowing offered no promise of rehabilitation and, in fact, often led to disease and death. However, it shared with the prison workhouses of northern Europe a new aspiration to integrate hard labour into punishment for the eeconomic benefit of the state.
And what happened to the captives from Ukraine [...]? The slaves functioned at all levels of Ottoman society [...]. At the lowest end of the social scale were galley slaves conscripted into the imperial naval fleet and field hands who labored on Ottoman landed estates.
Andre Zysberg's study shows that [...] nearly 1,500 Huguenots were sentenced to the galleys between 1680 and 1716 [...].