I think this song is talking about the generation of his grandfather. Describing his funeral and wondering about his life. How he can relate his life to his grandfathers. The blackbirds on the road he see's are like the war drum his grandfather heard while fighting in a war.
The difference that he found with his grandfather is that his grandfather knew where he was marching. He has to march into the unknown. Life on the road, is the making the right decision? Looking at his grandfathers life to try to resolve his conflicts.
I think this song is talking about the generation of his grandfather. Describing his funeral and wondering about his life. How he can relate his life to his grandfathers. The blackbirds on the road he see's are like the war drum his grandfather heard while fighting in a war.
The difference that he found with his grandfather is that his grandfather knew where he was marching. He has to march into the unknown. Life on the road, is the making the right decision? Looking at his grandfathers life to try to resolve his conflicts.