During World War I, Holzminden was the site of a large civilian internment camp on the outskirts of the town, which held up to 10,000 Polish, Russian, Belgian and French nationals, including women and children (1914–18); and also of a smaller prisoner-of-war camp for captured British and British Empire officers (1917–18).
Esimese maailmasõja ajal oli Holzmindenis suur interneeritute laager linnaservas, kus hoiti kuni 10 000 Poola, Vene, Belgia ja Prantsuse kodanikku, sealhulgas naised ja lapsed (1914–18); ja ka väiksem sõjavangilaager Briti ja Briti impeeriumi ohvitseridele (1917–18).