1) The wall by Bruce Springsteen is a anti war song.
2) Yes, there specific evidence of his personal connection in the song which can be seen in the lyrics of the song.
Explanation:
The wall by Bruce Springsteen is anti war song because the song gives tribute to the soldiers which fought against enemies in the Vietnam war and criticize the personals who started the war. Both Walter Cichon and Bart Haynes were the closest friends of the Bruce Springsteen who were killed in the Vietnam war. The author of this song writes this song in the memory of their friends which we can see in the lyrics of the song.
