Read this article and answer this question Promoted Captain in October 1660 by the Frisian stadtholder William Frederick, Prince of Nassau-Dietz, Van Coehoorn first saw action in 1665 during the Second Anglo-Dutch War when he helped repulse an English-funded invasion by the Bishop of Munster. During the Franco-Dutch War of 1672-78, he was wounded at the unsuccessful defense of Maastricht in 1673, then fought at Grave and Seneffe in 1674. He was promoted Major by Henry Casimir II, Prince of Nassau-Dietz, took part in the battles of Cassel and Saint-Denis and ended the war as a Lieutenant-Colonel.
Which war occurred first, the Second Anglo-Dutch War or the Franco-Dutch War?
the Second Anglo-Dutch War
In order to determine which war occurred first, the Second Anglo-Dutch War or the Franco-Dutch War, we have to check when Van Coehoorn fought in each of these wars. According to this passage, he saw action in 1665 during the Second Anglo-Dutch War and took part in battles of Cassel and Saint Denis during the Franco-Dutch War of 1672?78. Since 1665 is earlier than those two years (1672 &amp; 78), we could conclude that he had been fighting for a longer time at his promotion from Captain to Major by Henry Casimir II as noted on this article: "Promoted Major by Henry Casimir II". Therefore it would be much logical if we consider van Coehoor was promoted major after participating several battles within few.