Complex sentence: In the Military the officers who as young lieutenants had been volunteers in the Finish civil was now senior officers most noticeable among them where Axel Rappe a member of the General Staff and Archibald Douglas commander of the northern Army Corps.
Split into simpler sentences: In the military the officers who as young lieutenants had been volunteers in the Finnish civil war were now senior officers. Most notable among them were Axel Rappe, a member of the General Staff, and Archibald Douglas, commander of the northern Army Corps.