The poem conveys the following message: Victory at a price.
The poem expresses the idea that victory often comes at a significant cost. The speaker's father lived at Blenheim, but his dwelling was burnt to the ground, forcing him to flee with his wife and child. The poet describes the widespread devastation caused by the war, including the burning of homes and the loss of innocent lives, particularly mothers and newborn babies. Despite the tragic consequences, the speaker acknowledges that such events are considered inevitable in the aftermath of a famous victory. The overall message is that the glory of victory is accompanied by the harsh realities of destruction, suffering, and loss.