Rubuta ci gaba don wannan sakin layi - A shekara ta 1639, Ferdinand ya sake yin nasara don hana shirin Franco-Dutch. Rundunar sojan ruwa ta Netherlands ta ci nasara a kan manyan rundunar jiragen ruwa na Spain a Yaƙin Downs
, a bakin tekun Ingila, amma ya kasa hana mafi yawan sojojin da yake dauke da su, kimanin 7,000 zuwa 10,500, daga saukowa a Dunkirk. Duk da yake Ferdinand ya hana Yarima na Orange daga Hulst, sojojin Spain a karkashin Count Piccolomini sun hallaka babban sojojin Faransa a kudu a yakin Thionville.