Complex sentence: Two days after this engagement, German troops attacked two partisan platoons on Mošenjska planina, during this 13 hour engagement some 12 Partisans were killed and 5 were wounded.
Split into simpler sentences: Two days after this engagement, German troops attacked two partisan platoons on Mošenjska planina. During the 13 hour engagement some 12 Partisans were killed and 5 were wounded.