In October 1644 around 2,000 (two thousand) Polish infantry soldiers (some scholars think they were Cossacks, but the French sources do not identify them as such) went to France by sea via Gdańsk and Calais, where they participated in the siege and capture of Dunkirk.
1644年10月，大约2000名波兰步兵（部分学者称他们是哥萨克，但法国文献并没有这么称呼他们）在格但斯克经过海路到达加莱，在那里他们参与围攻并占领敦刻尔克。