By 1857, the national debt was around $29 million.
By the end of Civil War it hit $2.7 billion.
Up 90x.

In 1913, the debt was 3 Billion.
By the end of WW1  it hit 25 Billion.
Up 8.5x

In 1939, the debt was 40 Billion.
By the end of WW2 it hit 260 Billion
Up 6.5x

War and debt go hand in hand.
Although the multiple seems to be decreasing.