What point is Brutus most clearly making in lines 12–15?

1.the hosts on two opposing mountains stood,  

2.thick as the foliage of the waving wood;  

3.between them an extensive valley lay,  

4.o'er which the gleaming armour pour'd the day,  

5.when from the camp of the philistine foes,

6. dreadful to view, a mighty warrior rose; in the dire deeds of bleeding battle skill'd,

he believed if we do not fight back the britins would be in every household

the father traits is what becomes more dominate the mothers is half dominate or vise versa depending on the gender.