Question: The son of who was a German botanist, horticulturist, and microscopist, who joined the Schleswig-Holstein army to fight the first round of military conflict in southern Denmark and northern Germany rooted in the Schleswig-Holstein Question?
Sentence (from "Johannes Groenland"): In 1849 he joined the Schleswig-Holstein army to fight in the First Schleswig War.
Relevant evidence: No